“Swam with the shorts for the first time today, they were great! Provided just the right amount of extra buoyancy for a more streamlind position, but not too much that would throw off my stroke. I got great advice from Blueseventy support about the sizing. They said to go by waist measurement, not size name. With a 38 inch waist I got the XXL and it fits perfectly, although I normally wear size L in all swim shorts.”