With a warm, fast-drying 95% polyester (51% recycled)/5% spandex inverted microgrid thermal lining, the Patagonia R3 Yulex 3mm Cap provides additional warmth for your head and ears, keeping you comfortable through chilly surf, kite or bodysurf sessions. Made from flexible 3mm 85% natural rubber/15% synthetic rubber by polymer content, the 3-panel construction conforms to the head for a comfortable fit, while the neck strap with spandex binding keeps the cap secure. Seams have spot tape reinforcements for strength and durability; a Supratex brim shields your face from the sun. Exterior face fabric is stretchy and durable 88% recycled polyester/12% spandex. Natural rubber content is derived from sources that are Forest Stewardship Council certified by the Rainforest Alliance. Made in a Fair Trade Certified sewn. Suggested water temperatures: 48–55° F/9–13° C.