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Size chart

Sizing notes

CHEST: Measure at the widest point. If the person is muscular, take a second measurement at the armpit area, across the upper chest. Use the larger of the two measurements.
HIP: Place the tape around the hips and across the widest point of the buttocks. Make sure that all pockets are empty.
INSEAM: This is also referred to as the “crotch to ankle bone” measurement. Have the person stand with legs straight and feet about 12” apart. Measure from the crotch area, snug up against the body, down to the ankle bone.
SLEEVE LENGTH: Hold arm directly out to the side, parallel to the floor, palm down. Bend the elbow forward, stop hand in front of nose. Place the tape at the base of the neck, starting at the spine. Run tape along the arm, turn at the elbow, measuring to the wrist bone.
WAIST: Measure around the narrowest part of the waist.


Rated 4 out of 5 by from Nice dry suit I bought this product about a year ago, and I really like it. After having used a non-breathable cheap dry suit for many years, the breathability of this one is great. I have a fairly small waist, and the waist in this suit is more snug than I would like. But overall the fit is true to what's advertised. I saved a couple hundred dollars by choosing this over a GoreTex suit, but I really can't tell much of a difference, so I'm happy for the savings. Wish the color was more vibrant.
Date published: 2015-01-10
Rated 4 out of 5 by from good product I bought this to stay warm and dry in Scotland on a kayak trip...only problem was the drop seat zipper doesn't close completely and I took water in when I capsized!
Date published: 2017-07-15
Rated 1 out of 5 by from Sasquatch-sized Had to return this-- as soon as I opened the package I knew it would not fit. I had measured carefully and ordered a women's medium. It was about two and a half feet too long for me--it seemed to be a men's extra large. Too bad! Clearly, mislabeled.
Date published: 2013-06-27
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Questions & Answers

It seems like the drop seat zipper would be uncomfortable sitting on all day. Kokatat also has women's models with front relief zippers meant to be used w/ funnels. Does REI carry these/can this one be modified to have a front zipper instead of in back?

Asked by: KavaKado
The drop seat zipper on the Hydrus 3L Meridian is curved up towards the small of the back so you will not be sitting on the zipper when you are in your boat. The zipper will fit in the space between your body and the seat of the kayak.
Answered by: REIservice
Date published: 2018-01-24
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