To Sleeve Or Not To Sleeve, That Is The Question…
Posted in Watches & Race Equipment, Tech Talk, Swimming by Jordan RappSo, what is the difference, besides the obvious one, of a sleeveless vs. non-sleeveless wetsuit? Overall, the differences can be described in terms of “comfort,” with comfort breaking down into two categories - temperature differences and stroke differences.
If you are fighting for a podium spot that you routinely miss by a couple seconds, then, yes, a sleeved wetsuit will be faster in terms of strict hydrodynamics. But for most triathletes, the issue of hydrodynamics and fractions of a second of speed should take a back seat to comfort in the wetsuit.
In warm water, close to the 78F cutoff, a sleeveless wetsuit can keep you from overheating during the swim. Especially if it is sunny out, and you are in a black rubber suit, the extra cooling of water on your arms and a little more flow through the suit can make a big difference. In colder water, keeping water from flowing through the suit during the swim, as well as keeping your arms covered, can help make the swim a much more pleasant experience.
But beyond comfort with regards to water temperature, there is also the issue of swimming effectively in a wetsuit. A wetsuit should make you swim faster for a couple reasons. First off, it has a very, very smooth skin (which is why you paid for a fancy QR suit instead of a BodyGlove surf suit) which has a very, very low skin friction coefficient.
Think gliding across ice vs. gliding across, say, a pile of boulders. Secondly, it makes you more buoyant, so you float easier, which for many super-skinny runner/cyclist types, can be a big boon. It also provides that buoyancy in an engineered fashion, lifting your hips up especially high, to put you in what is known as a “downhill position,” which makes swimming with proper technique easier. Both sleeveless and sleeved wetsuits do this basically equally well.
The sleeves *can* get in the way of proper swimming, though. For some athletes, their rotator cuffs are not strong enough to flex the suit for an entire 1.2 or 2.4 miles of swimming. Moving the rubber shoulder, which is obviously molded to want to stay in one position, can be tremendously tiring.
Some companies, including Quintana Roo, have put a tremendous amount of effort into making the shoulders as flexible as possible. The ribbed, 0.5mm shoulders of the QR suit are paper thin. BUT, they are still less flexible than having nothing there. Especially over an IM, if you don’t posses the deltoids of a boxer, moving your arms can become tiring enough without needing to worry about flexing a suit as well.
If you feel this way, a sleeveless suit may very well end up being faster for you than a sleeved suit. I talk to many triathletes who bought sleeved suits because they think they are the fastest, without any sort of regard to how they would work for them specifically.
Wetsuits are a very individual item, just like a bike saddle or shoes. Don’t pick a suit just based on who swims in one. The right suit for the fellow leading the swim at an IM may not be the right suit for you. Of course it might be, but that’s just coincidence.
Many retailers have excellent exchange policies on suits that have only been used in the pool (with an obvious preference towards ones that have also not been peed in!). So try suits out. And, of course, make sure to try both sleeved and sleeveless to see which one works best for YOU.







