This is the ScubaPro Base Boot 4mm Tall Zippered Flex Sole Scuba Bootie Features: Economical Boot Built for Temperate Water Diving Sturdy Outsole, Provides Excellent Protection Toe and Heel Caps Reinforced to Extend Life of Boot Heel Cap Includes Molded Fin Strap Keeper Long Side Zipper Makes Easy Work of Donning and Doffing Zipper Fitted w/Gusset to Minimize Water Seepage Seams: Glued and Sewn Non-Marking: Feature Boat Owners Always Appreciate Built-In Arch Support Increases Comfort when Traversing Rocky Shorelines Hook & Loop Zipper-End Patch Secures Side Zipper when Closed Great Boot for Recreational or Technical Divers Dry Weight: 0.95 lbs. (0.43 kg) The 4mm Base Boot features a sturdy outsole that provides excellent protection. Included are toe and heel caps that have been reinforced to extend the life of the boot. The heel cap includes a molded fin strap keeper. The long side zipper makes easy work of donning and doffing and is fitted with a gusset to minimize water seepage. Aggressive anti-slip tread is non-marking, feature boat owners always appreciate, and boot has a built-in arch support increases comfort when traversing rocky shorelines.