Save time finding your sunglass size with our Costa Sunglasses Size Guide! Our Sports Opticians have hand-selected our most popular Costa sunglasses and separated them into large, medium, and small categories with charts to show their dimensions. From extra-large to smaller sizes, we’ve got a Costa sunglass frame for everyone!
In This Post
Find Your Sunglasses Size
Costa Sunglasses Size Chart
Extra Large & Large Costa Sunglasses
Medium Costa Sunglasses
Small Costa Sunglasses
Shop Costa Del Mar Sunglasses Online at SportRx
Costa Sunglasses Questions
What are the widest Costa Del Mar sunglasses?
How do I know my sunglasses size?
What are the most popular Costa sunglasses?
Find Your Sunglasses Size
Not sure what size you wear? Don’t sweat it! We break down how to find your sunglasses size below, or what we call your SFW: SportRx Frame Width. Note: all measurements are in millimeters.
- Grab a ruler
- Use a pair of glasses that fit
- Measure the distance between the temples (behind the hinges)
Find Your Sunglasses Size and SFW
For a video demonstration on how to find your sunglass size/SFW, check out the section on this page titled "How do I know my sunglass size?"
Costa Sunglasses Size Chart
Now that you’ve got an idea of what your sunglass size is, let’s get into the frames. Every Costa Del Mar frame in our Costa sunglasses size guide is a bestseller. Keep scrolling to see a quick list of features for each one, or click the "Shop" button to see the full list on the product description page. You’ll even find legit Costa reviews from real customers.
And don’t forget: all Costa Del Mar frames you see here are prescription-ready! Find your perfect pair below.
Extra Large & Large Costa Sunglasses
Costa Sunglasses Size Guide Large and Extra Large Frames
COSTA SPEARO XL
Men’s XL, Women’s XL
Calling all extra-large noggins! One of its widest frames, Costa's Spearo XL has an oversized lens shape that’s ideal for larger faces and heads. The temples give moderate coverage with a 6-base curvature that bends to your natural face shape. The Spearo XL’s ultra-lightweight and durable bio-resin frame material makes this sunglass stand up under tough weather conditions, and rubber grips on the nose and temples keep it snug while you sweat.
Costa Spearo XL in Matte Black with Gray Costa 580 lenses.
Costa Spearo XL Frame Dimensions
Frame Width: 142mm
Temple Length: 140mm
Lens Height: 48mm
Lens Width: 59mm
Bridge: 17mm
SHOP COSTA SPEARO XL
COSTA PERMIT
Men’s XL, Women’s XL
Similar in size to the Spearo XL, the Costa Permit is an extra-large frame with maximum sun and wind coverage. This is an 8-base frame, meaning it is a full wrapped frame that hugs the contours of your face for supreme fit. With total sweat management features, the Permit is equipped with side vents, a completely rubberized nose bridge, and temples lined with Hydrolite™ rubber for a comfortable grip.
Costa Permit in Blackout with Green Mirror Costa 580 lenses.
Costa Permit Frame Dimensions
Frame Width: 141mm
Temple Length: 114mm
Lens Height: 40mm
Lens Width: 62mm
Bridge: 17mm
SHOP COSTA PERMIT
COSTA FANTAIL PRO
Men’s L, Women’s XL
Are you big-headed, but also sweat a lot? You'll love the Fantail PRO! It's Costa's popular frame but with all the bells and whistles of the PRO series. If you’re the type to spend all day out on the water or in the heat, this one's for you. Sweat and moisture don’t stand a chance with built-in sweat channels, eye wire drains, and vented rubberized nose pads. With extended side shields and hooding on top, the Fantail PRO blocks the elements at every angle for ultimate protection. This is an 8-base frame that provides full coverage for larger heads.
Costa Fantail PRO in Matte Gray with Blue Mirror Costa 580 lenses.
Costa Fantail PRO Frame Dimensions
Frame Width: 139mm
Temple Length: 120mm
Lens Height: 42mm
Lens Width: 60mm
Bridge: 15mm
SHOP COSTA FANTAIL PRO
COSTA REEFTON PRO
Men’s L, Women’s L
If you like a roomy view with a square shape and a lot of coverage, you can’t go wrong with the Reefton PRO. The Reefton PRO features a large, 8-base wrap around fit to provide generous protection from sunlight and wind, plus all of the top notch sweat management perks of Costa’s PRO series. With Hydrolite™ rubber lining along the temples and nose bridge and tough, lightweight, bio-resin frame material, the Reefton PRO keeps you fixed on your adventure.
Costa Reefton PRO in Gray with Gray Silver Mirror Costa 580 lenses.
Costa Reefton PRO Frame Dimensions
Frame Width: 138mm
Temple Length: 114mm
Lens Height: 45mm
Lens Width: 63mm
Bridge: 15mm
SHOP COSTA REEFTON PRO
COSTA RINCON
Men’s L, Women’s L
Big heads love the Costa Rincon for its large, rectangular shape, spacious views, and straight browline. With moderate coverage and a thinner frame design, the Rincon is a 6-base wrap that’s as flexible as it is tough. The lightweight, bio-resin frame won’t dry out or crack after continued use outdoors. You’ll get the Rincon for your water days, but end up wearing it everywhere else you go. It’s comfortable, versatile, and the perfect fit for your large melon.
Costa Rincon in Black with Gray Silver Mirror Costa 580 Lenses.
Costa Rincon Frame Dimensions
Frame Width: 137mm
Temple Length: 140mm
Lens Height: 45mm
Lens Width: 63mm
Bridge: 11mm
SHOP COSTA RINCON
Medium Costa Sunglasses
The medium-sized frames in our Costa sunglasses size guide will walk the line between a medium and large fit for both men and women. Keep in mind that most people can go up or down a few millimeters in size and still find a great fit.
Costa Sunglasses Size Guide Medium Frames
COSTA TUNA ALLEY PRO
Men’s M/L, Women’s L
Just a millimeter smaller than its predecessor, the Tuna Alley — the Tuna Alley PRO is a good fit for average heads that are on the bigger side, but it may be a little small for a truly large dome. This frame is a Costa favorite and is fully-stacked with performance features: top hooding and side shields, totally adjustable and vented rubber nose pads, moisture wicking channels, and Costa’s proprietary 580 lens tech for superb visual clarity. If your head is a smidge larger than the average person, try the Tuna Alley PRO.
Costa Tuna Alley PRO in Black Matte with Green Mirror Costa 580 Lenses.
Costa Tuna Alley PRO Frame Dimensions
Frame Width: 136mm
Temple Length: 123mm
Lens Height: 42mm
Lens Width: 60mm
Bridge: 16mm
SHOP COSTA TUNA ALLEY PRO
COSTA BLACKFIN PRO
Men’s M/L, Women’s L
A close relative of the Tuna Alley PRO is the Costa Blackfin PRO. With slightly thicker temples, a smaller frame width and lens height, the Blackfin PRO still offers exceptional coverage in an 8-base frame that comfortably hugs your face and won’t budge. The extended side shields and top hooding block out sun and wind with vented nose pads and sweat channels to keep your lenses ventilated. The Blackfin PRO is seriously comfortable for most head sizes and will perform great no matter what your activity is.
Costa Blackfin PRO in Matte Gray with Blue Mirror Costa 580 Lenses.
Costa Blackfin PRO Frame Dimensions
Frame Width: 135mm
Temple Length: 121mm
Lens Height: 41mm
Lens Width: 60mm
Bridge: 16mm
SHOP COSTA BLACKFIN PRO
COSTA JOSE
Men’s M, Women’s L
The Costa Jose sunglasses embody the life of legendary fisherman Jose Wejebe. They’re a comfortable medium fit on the narrow side, so if you prefer a bit more temple length, these are a great choice. Constructed with durable TR-90 nylon, the Jose is a full-wrap frame that is completely lined on the nose bridge and lower half with Costa Hydrolite™ rubber for exceptional comfort and all-day hold. Optical spring hinges give this frame extra flexibility.
Costa Jose in Blackout with Gray Costa 580 Lenses.
Costa Jose Frame Dimensions
Frame Width: 135mm
Temple Length: 130mm
Lens Height: 38mm
Lens Width: 62mm
Bridge: 16mm
SHOP COSTA JOSE
COSTA BRINE
Men’s M, Women’s M/L
If you like a close fit with less frame material for a true medium-sized frame, the Costa Brine is an excellent choice. Don’t mistake its thinner frame design for subpar performance, though. The Costa Brine is constructed with durable TR-90 nylon, front facing vents for airflow, and Costa’s proprietary Hydrolite™ material along the nose bridge and temple arms for added grip. Go with the Brine if you’re looking for that weightless feel while you’re out workin’ up a sweat.
Costa Brine in Matte Black with Green Mirror Costa 580 Lenses.
Costa Brine Frame Dimensions
Frame Width: 133mm
Temple Length: 118mm
Lens Height: 36mm
Lens Width: 59mm
Bridge: 18mm
SHOP COSTA BRINE
COSTA FANTAIL
Men’s M, Women’s M/L
The Costa Fantail is easily one of our most popular frames. It’s packed with all the same performance features of the Costa Blackfin, but with slightly smaller lenses. This medium-sized frame fits most average-sized melons and will impress you with its comfort and performance. The Fantail has you fully covered with an 8-base wrap and heavy-duty TR-90 nylon frame material, with Hydrolite™ lining on high touch areas such as the nose and temple arms. A favorite among men and women.
Costa Fantail in Blackout with Sunrise Silver Mirror Costa 580 Lenses.
Costa Fantail Frame Dimensions
Frame width: 132mm
Temple Length: 125mm
Lens Height: 39mm
Lens Width: 61mm
Bridge: 18mm
SHOP COSTA FANTAIL
Small Costa Sunglasses
Costa has a small selection (no pun intended!) of smaller frames. Our Costa sunglasses size guide includes three favorite frames that are smaller mediums with one true small-sized frame.
Costa Sunglasses Size Guide Small Frames
COSTA RINCONCITO
Men’s M, Women’s M
If you love the Costa Rincon but have a smaller head, go for the Rinconcito! The Costa Rinconcito is affectionately referred to as the Rincon’s “little brother,” which means it packs all of the exact same features in a smaller frame size. Built tough with a 6-base bio-resin frame, this lightweight material can endure heavy-duty conditions. Enjoy wide peripheral views and West Coast style with the Rinconcito’s straight edges and square lens design.
Costa Rinconcito in Matte Black with Gray Silver Mirror Costa 580 Lenses
Costa Rinconcito Frame Dimensions
Frame Width: 131mm
Temple Length: 135mm
Lens Height: 42mm
Lens Width: 60mm
Bridge: 12mm
SHOP COSTA RINCONCITO
COSTA WATERWOMAN
Men’s M, Women’s M
For those with smaller heads but big style, you must check out the Costa Waterwoman. Before you write this off as a frame that’s too pretty to perform, note that the Waterwoman is equipped with high performance features that are neatly hidden within its attractive design. Hydrolite™ rubber padding lines the inside of the temples and nose bridge for a no-slip grip, and each temple tip is equipped with a leash attachment. They’re large, but not heavy, built from weather-resistant bio-resin nylon to stand against the elements. The Waterwoman is a completely stylish and fully functional frame for small to medium heads.
Costa Waterwoman in Shiny Wahoo with Gray Silver Mirror Costa 580 Lenses.
Costa Waterwoman Frame Dimensions
Frame Width: 130mm
Temple Length: 130mm
Lens Height: 44mm
Lens Width: 55mm
Bridge: 19mm
SHOP COSTA WATERWOMAN
COSTA ANAA
Men’s S, Women’s S
Our best selling and smallest Costa frame is the Costa Anaa, which is a size small by all noggin’ standards. These frames are utterly charming, but still ready for adventure with Hydrolite grip tucked under the nose bridge and behind each temple. The slender 6-base frame design makes them easy to wear and easy to add your prescription to. Made with Costa’s premium 580 lens tech, the Costa Anaa is perfect for any beach bum with a smaller head.
Costa Anaa in Shiny Retro Tort/Cream/Mint.
Costa Anaa Frame Dimensions
Frame Width: 125mm
Temple Length: 129mm
Lens Height: 43mm
Lens Width: 55mm
Bridge: 16mm
SHOP COSTA ANAA
Shop Costa Del Mar Sunglasses Online at SportRx
Got more Costa Del Mar sunglasses questions? Need help finding your size? Reach out to our friendly, in-house Sports Opticians! We’re here to help and specialize in helping you decide on the best pair of Costa sunglasses for your needs and desires.
Contact us with any questions you might have, no matter how great or small they might be.
You can also breathe easy knowing that every order at SportRx is backed by our See Better Guarantee™. Try your new eyewear for 45 days, and if you’re not totally stoked about them, we’ll happily take them back for a full refund, exchange, or credit towards a different pair. We even cover shipping.
Get your perfectly sized Costa sunglasses online at SportRx today!
SHOP ALL COSTA SUNGLASSES
Costa Sunglasses Questions
What are the widest Costa Del Mar sunglasses?
The widest Costa frames at SportRx are the Costa Fisch with an SFW of 145 and the Costa Apalach with an SFW of 144. They’re both considered extra-large Costa frames but have varying features:
Costa Fisch (pronounced “fish”)
- 8-base wrap
- Bio-resin frame
- Frame vents
- Hydrolite™ lined temple arms
- Full coverage
Costa Apalach
- 6-base wrap
- Acetate frame
- Adjustable temples
- Moderate coverage
- Athleisure activity
How do I know my sunglasses size?
To find your sunglass size, check out this step-by-step video where Sunglass Rob walks you through how to find your frame width, or your SFW (SportRx Frame Width). Your SFW will work for any brand or size across all products on SportRx.com.
What are the most popular Costa sunglasses?
The most popular Costa frames may vary by store. At SportRx, our most popular Costa sunglasses tend to be the Rincon, Tuna Alley, Fantail, Rinconcito, Diego, and Reefton. The Costa PRO Series Sunglass Collection, which debuted in 2021, took four of Costa’s bestselling frames and gave them a stack of performance upgrades. Each PRO Series frame is climbing in popularity as well, particularly the Fantail PRO.
Lens Width 59
Bridge Width 18
Temple Length 137