Product details:

These Unisex Buoyancy Shorts from Head, are designed for swim training, either in the pool or in open water. The jammer type buoyancy short lifts your hips up like a wetsuit and help you find the optimum position in the water. You can achieve a similar effect using a pull buoy, but these buoyancy shorts allow you to kick and turn naturally. The jammers has a base of extremely flexible Glideskin neoprene 3mm on back and 5 mm on front. The Glideskin coating provides great mobility and minimum water resistance. Drawstrings at the waist. Unisex model.