For cold-weather sailing, the generous, ergonomic fit integrates well with base layers. In warmer weather, slip the wide-cut legs over your sailing shoes and shorts whenever conditions call for a last-minute costume change. Elasticated mesh shoulders provide reassuring comfort and allow full range of motion. Tough Cordura material reinforces the seat and knees, providing a layer of protection when scrambling across the deck. Thermo-taped seams prevent leaks. I haven't used the RCs enough to confirm long-term durability, but halfway through the season they don't show any signs of wear--surprising, considering their feather-light feel.