Don't let the warm air temps full you-even in the summertime water temps can run chilly. So, to keep the shiver at bay while we wait for our wave, we paddle out in the Patagonia Regulator Lite Long-Sleeve Top. The FSC-certified natural rubber construction creates fewer CO2 emissions than neoprene in production, helping us keep both our core and conscience comfortable, while the full-length front zipper allows us to put it on and take it off without effort.