Randy Sun sock sizing
Randy Sun prints 1 chart for the models here: adult. The Randy Sun size chart page shows each one as the maker prints it, with the models that use it.
adult: Randy Sun advises sizing up if you are at the top of a size, because its waterproof socks are thicker than normal socks.
Look up your size. See the fit checklist for heel position, toe room and cuff clearance.
Wash and dry Randy Sun socks
Turn the socks inside out and machine wash on a gentle cycle below 40°C (104°F) with a standard liquid detergent, without fabric softener or bleach; or rinse them by hand in lukewarm water and press the water out without wringing. Drip dry in a shaded, well-ventilated place; do not tumble dry, iron or dry clean.
A different instruction on the exact sock takes precedence over general brand guidance. Use the care lookup and your own drying estimate in the rotation planner.
Guarantee and return checks
If Randy Sun socks lose their waterproof performance within 365 days of normal use and care, Randy Sun replaces them once, free of charge. After 365 days it offers a 20% discount code toward a new pair.
Randy Sun’s Return & Exchange page is a form for reporting a faulty product. It states no return window, refund terms or return postage, and says to expect a reply within 48 hours.