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The SIM is the ultimate training tool for triathletes and swimmers who want to mimic the body position and experience of a wetsuit swim or a full speed swim race in open water or in the pool. 

The SIM is a buoyancy short made from neoprene that mimics the lift and position of a wetsuit without overheating.  It is also a pull buoy replacement, vertical kicking tool, and race simulator all in one. The SIM lets you kick and is the right length to let you turn naturally. The reduced buoyancy on the sides of the SIM Pro encourage proper rotation, while the SIM Elite has maximum buoyancy. The SIM makes every swim a race-specific training workout and is a great tool for your kit.

Note, these shorts are designed for the pool and should have excellent durability if you rinse them after use with fresh water and dry them thoroughly.