From Patagonia

These winter wetsuit booties are made from stretchy 5mm 85% Yulex natural rubber/15% synthetic rubber by polymer content, with a full-foot design for increased warmth. Best for water temperatures: 38-48 F/3-9 C. Made in a Fair Trade Certified factory.

• Stretchy 85% Yulex natural rubber/15% chlorine-free synthetic rubber by polymer content; the natural rubber is Forest Stewardship Council certified by Preferred by Nature
• The boot is lined with a warm and stretchy, solution-dyed 66% recycled nylon / 22% recycled polyester/5% recycled spandex camo thermal lining that dries fast and minimizes weight
• All seams are triple-glued, blindstitched and internally taped at high-stress areas
• Custom asymmetrical grip pattern improves dexterity and board control.
• Microgasket at cuff prevents water entry
• Made in a Fair Trade Certified factory, which means the people who made this product earned a premium for their labor
• Made in Thailand.
• 499 g (17.6 oz)