The Tremor Convertible by Merrell is a sandal that doesn’t mind backing down. Easy removal of the padded backstrap turns it into a slide, closed by hook/loop straps. Either way, ventilated sidewalls offer full support along the foot, aided by a 3D design that deeply seats the foot into an antimicrobial footbed. Underfoot, it’s Merrell all the way, from a nylon flex plate protecting the forefoot to a Merrell Air Cushion® midsole with women-specific Q-Form™ alignment, and graduated lugs and Pincer tread on a 360 Sandal Grip™ sole. End Uses: Light hiking, biking or running around town. Best worn without socks or a light-weight sock. - Synthetic Leather Upper - Neoprene/Spandex Lining - Hook and Loop Instep and Forefoot Closure - Removable Neoprene Padded Rear Strap - Microban® Antimicrobial Footbed - DeepDish™ 3D Contour Injection Molded EVA Footbed with Protective Sidewalls - Compression Molded EVA Footframe - Q-Form™ Triple Density Compression Molded EVA Footframe (women) - Air Cushion® Midsole - Injection Molded Grade 2 Nylon Forefoot Flex Plate - 4mm Sole Lug Depth - Merrell 360 Sandal Grip™ Sole/Sticky Rubber - Vegan Friendly Footwear Men’s Weight: 1 lb. 2 ozs. Women’s Weight: 1 lb. Men’s Sizes: 7-15 Full Sizes Only Women’s Sizes: 5-11 Full Sizes Only Siren Sport A Siren that responds to the urge to surge. But with a full grain leather upper and rubber bumpers at toe and heel it is built for durability. Merrell Air Cushion® midsole with women-specific Q-Form™ technology smoothes out strides while maintaining alignment. Vibram® Siren™ sole features heavier lug pattern in high-friction areas and tread for vital traction under the arch. End Uses: Light hiking or biking on trails or urban terrain in dry conditions. Best worn with mid to light weight socks. - Slip Lasted Construction - Full Grain/Synthetic Leather and Breathable Mesh Upper - Breathable Mesh Lining - 4.5mm Anatomical Footbed - Nylon 6.6 Injection Molded Arch Shank - Q-Form™ Triple Density Compression Molded EVA Footframe - Air Cushion® Midsole - 5mm Sole Lug Depth - Vibram® Siren™ Sole/TC5+ Rubber Women’s Sizes: 5-11 Weight: 1 lb.