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Women's Diamond Cove Swim Jacket UPF 50+

Women's Diamond Cove Swim Jacket UPF 50+ is rated 4.8 out of 5 by 8.
  • y_2019, m_6, d_15, h_21
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Was $99.00
Now $79.99
  • UPF 50+
  • Slightly fitted
  • Mock neck
  • Long sleeves with thumbholes
  • Flounce hem
  • Zipper front
  • 2 front pockets
  • Flatlock stitching for smooth seaming
  • Aqua SUNTECT®: Chlorine and saltwater resistant with 4-way stretch
  • Polyester
  • 25” Body length (size medium)
  • Easy care: machine wash, line dry
  • Imported

Recommended for your days in the water, at the pool, lake or ocean! Great for leisurely lap swims or water aerobics.

Avoid: active fitness, not moisture-wicking and may cause overheating

Enhance your feminine form and stay in the sun longer in a swim rash guard with delicate style, that is durable enough to take on chlorine and saltwater day after day. Designed to look flatteringly fabulous with a flounce hem, this zip up rash guard is big on UPF 50+ sun protection, with a mock neck, long sleeves and thumbholes for top of the hand coverage. The comfortable 4-way stretch, quick dry performance fabric, with flat lock seams to reduce chafing, are sure to make this summer darling you favorite water piece. And we know you will love the 2 front zipper storage pockets.
More Information
Recommendation Content

All Coolibar fabrics are recommended as effective UV protectants only for covered areas. Coolibar is the first clothing company to receive The SCF Seal of Recommendation.

Fabric Details

Aqua SUNTECT® Classic
This is where it all started! We set out to develop a superior UPF 50+ swim fabric that didn’t feel heavy or rubbery like scuba rash guards. The result is a technically elegant, sun-safe swim fabric that is chlorine and saltwater resistant with a modest 4-way stretch. It’s silky smooth on the inside with a figure-flattering matte surface on the exterior. Customers love our Aqua Classic because it’s lightweight, quick dry and comfortable.

Coolibar’s sun protective clothing is designed to be worn in the sun and to provide excellent UV protection. If you have any questions about size, fit or style, talk to one of our Customer Service Representatives at 1-800-926-6509. They'll be happy to help, as well as offer expert advice on coordinating sunscreen hats with your wardrobe. 

Match your measurements (in inches) to the chart below. If your measurements fall in between two sizes, you may prefer the larger size. 


SIZE 00-0 2-4 6-8 10-12 14-16 18-20 22 24 26
BUST 31⅛-31¾ 32-33¼ 33½-35 36½-38 39½-41 43-45 47 49 51
WAIST 25⅜-26⅛ 25-26 26½-27½ 28½-30 31½-33 35-37 39 41 43
HIPS 33¼-33⅞ 35-36 36½-37½ 38½-40 41½-43 45-47 49 51 53


Measurements S/M L/XL XXL ONE SIZE
HEAD (inches) 21 ⅛ - 23 ¼ 23 ¼ - 24 24 ⅜ - 25 ⅛ 22 - 24 ¾
HEAD (cm) 54 - 59 56 - 61 62 - 64 56 - 63
HAT SIZE 6 ¾ - 7 ⅜ 7 ⅜ - 7 ⅝ 7 ¾ - 8 7 - 7 ⅞
Due to the range of fabrics and styles, each hat fits slightly different. See individual hat sizing ranges on their product pages. Our One Size hats are designed to fit most.


Measurements XS S/M L/XL
Circumference (inches) 6 - 7 7 - 8 ½ 8 ½ - 10
Measure circumference of hand around fullest part just below the knuckles, excluding thumb. Use right hand if right handed, and left hand if left-handed. Measure hand in inches and refer to the sizing chart for your glove size. Use the larger number to determine your size. People with extra long fingers, or who would like a looser fit should consider ordering a size up.


Measurements XS S/M L/XL XXL
BICEP (circumference) 7 ¼ 9 ¼ 11 ¼ 13 ¼
WRIST (circumference) 5 ¼ 5 ½ 6 6 ¼
SLEEVE LENGTH 18 20 22 ½ 22 ½


Measurements XS S M L XL XXL
30C, 30D *          
32A, 32B, 32C, 32D *          
32DD, 34A, 34B, 34C   *        
34D, 34DD, 36A, 36B, 36C     *      
36D, 36DD       *    
38A, 38B, 38C, 38D       *    
40A, 40B, 40C, 40D         *  
42A, 42B         *  
42C, 42D           *

The measurements on our size chart are very similar to most major clothing companies. However, we generally allow for a relaxed fit - geared for outdoor activity, travel or a casual outing. Pants, skirts, blouses and polo shirts have extra room for comfort and are not body hugging. 

When fitting jackets, cover-ups or any outerwear, our fit model is wearing the appropriate under layers that we would expect you to be wearing. You do not have to "size up" - we have done that for you. 

Never try to measure yourself. Seek the help of a companion and use a soft tape measure. 

Height: Stand in stocking feet, with feet together, back to the wall. Measure from top of head to the floor. 

Arm: Bend arm to 90 degrees. Place hand on hip. Start at center of back of neck. Measure across the shoulder to the elbow and down to the wrist. Number of inches equals your sleeve length. 

Bust/Chest: With the arms relaxed down at sides, measure fullest part of bust/chest, keeping tape parallel to floor. 

Hip: Stand with heels together, keeping tape straight and parallel to the floor. Measure around fullest part. 

Neck: Measure around base of the neck (the lowest point of the neck). Number of inches equals the neck size. 

Inseam: Take a pair of pants that fits you well. Measure from the crotch seam to the bottom hem. Number of inches equal inseam length. 

Rise: Start the tape at the center back waist, run the tape between your legs, pulling comfortably at the crotch and up your natural waist. Total measurement is your rise. 

Waist: Measure around your waist, against your skin (not over your shirt or pants) at the height you normally wear your pants. 

Head: Measure around your head, from the center of your forehead, keeping tape straight and parallel to the floor. Measure around fullest part.

Rated 5 out of 5 by from You need this rash guard in your life In the last 3 months in prep for summer, I have purchased 8 different long sleeve rash guards trying to find one that not only fits but is flattering to my size 18/42c body. Every single one has gone back. Every single one I ordered went back for the exact same reasons: too tight in the bust, too tight in the hips, too big in the waist and shoulders, sleeves too long and the material too heavy for the beach. While more than I wanted to spend, I figured this was my last shot. So, based on past history with other rash guards, I ordered an XXL, and it was actually too big! I sent it back and got an XL (which is my correct size per coolibar size chart) and to my utter shock and delight, not only does it fit, but is extremely flattering. This rash guard is built for a woman, not a 12 year old boy. The material is absolutely perfect for swimming or boating. Its extremely well made, the zipper goes up and down without a struggle and the fabric is so lightweight it wont weigh me down when wet. Even the side zipper pockets go up and down with ease. I am now a fan for life of these products! Well worth their price. I would love to see this style in short sleeves for really hot days, and in Hawaiian prints! I would buy more!
Date published: 2019-05-23
Rated 5 out of 5 by from Great jacket and so comfortable I wear this everywhere. It is lightweight but comfortable on a windy day. I bought it for the sun factor but wear it everywhere. Need to order another one.
Date published: 2019-05-13
Rated 5 out of 5 by from Excellent Features Lightweight; permanently SPF 50 after washings; complete front closure zipper which makes it much easier to take off when wet; two zippered pockets for hotel key and/or credit card, etc.; wrist "slit" to ensure complete non-slipping coverage. After all my research, this is the very best swim jacket I've found. Coolibar has been highly recommended by my Dermatologist. My only concern is that when ordering as a Canadian customer, it seems extremely difficult/expensive to make a return. Delivery time to Canada was close to 3 weeks.
Date published: 2019-02-24
Rated 3 out of 5 by from Flares at bottom are large I liked this jacket EXCEPT that the flares at the bottom are much larger than the photo would suggest. I prefer a more fitted look, so I did not like the flares. I returned the jacket. It was a pity because the rest of the jacket was perfect.
Date published: 2018-12-06
Rated 5 out of 5 by from Most flattering swim jacket I have ever worn! This is without question the most flattering swim jacket I have ever worn. The collar comes up nice and high, yet is very comfortable, even fully zipped. The peplum makes the waist look smaller and even helps to camouflage my ample belly. The thumb holes keep my hands mostly protected. The zippered pockets are perfect -- secure, unobtrusive, easily accessible. I own several styles of Coolibar Swim Jacket / Water Jacket / Rash Guard. When I compare this jacket to my Coolibar Women's Swim Jacket, I find that the Swim Jacket's princess seams and set-in sleeves (rather than raglan sleeves) are especially flattering to the figure, remarkably creating the illusion [alas!] of an hourglass figure. These would be ideal additions to the next version of the Diamond Cove Swim Jacket. However, the bold, larger scale print (Black Modern Palm) hides figure flaws far better than does the much smaller scale Black Diamond Tile print of the Women's Swim Jacket. The Black Modern Palm print is chic and elegant. I liked the jacket so much that I ordered the pink. The solid pink version was not nearly so forgiving of my figure flaws, so I exchanged it for a second jacket in the Black Modern Palm. I hope that this jacket will be offered in other bold prints of about the scale of the Black Modern Palm. A print with bright turquoise and bright cobalt blue (and just a bit of black so that black swim capris would coordinate) would be lovely. And a version also incorporating princess seams and set-in sleeves would be phenomenal.
Date published: 2018-08-22
Rated 5 out of 5 by from So flattering AND functional I’ve been wanting a full zip (ugh, so many half zips out there!) rash guard for many years — my pullover one is just too hard to take off once wet — but could not find the right one. I like the longer length of this one so it actually meets the top of my bikin bottoms and eliminates the need for a strip of sunscreen between the two. Also love the zippered pockets! Could stash your hotel key card in there. Also love the thumb holes for added length and coverage AND so it does not ride up while swimming. And the little peplum in the back is so adorable and helps define a bit of a waist. Only complaint is minimal colors to choose from. The B+W palm print is adorable, but would really only work if you already have a solid suit. I did the hot pink because almost all my prints have at least some of this color, but I know this is not true of everyone. I wear a Medium in Coolibar button-downs, so I ordered this in a Small because obviously you want it snug and not billowing everywhere in the water. That was too big, so I got XS instead......consider sizing down.
Date published: 2018-07-17
Rated 5 out of 5 by from Perfick jacket6 I have skin lupus and needed something to wear even in a car we'll make and just too cute
Date published: 2018-07-11
Rated 5 out of 5 by from Stylish I bought this for my trip to Florida and I was so glad I did. I wore it over my swimwear and it kept me totally protected from the sun on a 3 hour jet ski tour,1 hour of parasailing, and on the beach the rest of the day. It is fast drying and kept me cool in the heat. I wear a size 16-18 ( 2X) in clothing so I was nervous about ordering a XL but it fit perfectly and was very flattering with the flare at the bottom.
Date published: 2018-06-28
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