O'Neill Heat 5mm Round Toe Cold Water Surf Boot Uppers constructed from Soft and comfortable premium 3mm Thermoprene neoprene material Govt plans uninterrupted gas supply by 2026 Henderson 3mm Thermoprene Tropic Boot For Men Henderson Thermoprene 3mm Tropic Boot | Beach Cities Scuba Henderson 3mm Thermoprene Tropic Boot Reviews Has integrated hardened insert for puncture resistance. HENDERSON AQUATICS, INC. $58.95. 3MM THERMOPRENE LOW TROPIC BOOT-10. 3MM THERMOPRENE LOW TROPIC BOO.. $56.95. MORE CHOICES AVAILABLE. 3MM THERMOPRENE LOW TROPIC... Aggressive tread pattern provides traction. Uppers constructed from Soft and comfortable premium 3mm Thermoprene neoprene material. Great for all watersports or just walking in or around water, the beach, boat or dock Sole has integrated hardened insert for puncture resistance. Sole is constructed from soft and flexible thermoplastic rubber. Aggressive tread pattern provides traction All seams on upper are glued and sewn for durability and warmth using durable bonded thread