Description Features Sizing Resources A Lightweight & Fully Waterproof Minimalist Boot The Lems Waterproof Boulder Boot is a fully waterproof minimalist hiking and casual boot that supports natural foot health. This versatile, lightweight, and attractive boot incorporates a gusseted tongue, is completely flat from heel to toe, possesses a toe box that is widest at the ends of your toes, and is fully collapsible and packable, making it a great option for adventures near and far. Full-Grain Oiled Leather Upper, Wide Toe Box The Waterproof Boulder Boot’s upper is made of durable full-grain oiled leather to help improve boot longevity. The boot’s generous toe box is compatible with Correct Toes and allows you to experience the foot health benefits that come with natural toe splay. This barely-there boot contains no heel counter, toe counter, or shank, and it packs away easily, preserving space in your travel bag or luggage. Can Be Paired With Other Helpful Footgear This stylish boot, which comes with two unique lace colors, also works great in combination with other helpful footgear, including Injinji toe socks, Pedag metatarsal pads or Strutz Pro foot pads, and Naboso insoles. The Lems Boulder Boot works well in temperatures as low as 15 degrees F (about -10 degrees C) when used with an appropriate sock. Each Waterproof Boulder Boot weighs about 13 oz. Note: If you are new to using Lems footwear, we recommend that you start in slowly, gradually building up your wear-time and giving your body the chance to adapt to the thinner soles and the increased workload on your feet. Weight: ~13.0 oz. NF Certified Product Stack Height: 10.0 mm Last: Lems Natural-Shape Upper: Full-grain oiled leather Tongue Construction: Gusseted Footbed: Removable 3.5 mm liner Drop: 0.0 mm (i.e., flat from heel to toe) Travel-Friendly: Collapsible and packable Lining: Full-grain leather + moisture wicking Outsole: 9.0 mm LemsRubber injection rubber Lace Colors: Comes with two unique lace colors Toe Box: Extra wide toe box for natural toe splay Works great with Naboso proprioceptive insoles Works great with Correct Toes and Injinji toe socks Works great with Pedag met pads or Strutz foot pads Waterproofing: 100% breathable waterproof membrane To get the most out of your Lems Waterproof Boulder Boots, the manufacturer recommends that you order a half-size up from your normal US shoe size. If you plan on wearing thicker socks with these boots, then consider ordering one full size larger than your normal US size. For example, if you normally wear a men's US size 11 shoe, consider ordering an 11.5, or possibly a 12 (in the case of the latter consideration), in the Lems Waterproof Boulder Boot. If you're on the fence about what size to order, consider ordering both sizes and then simply return the size that doesn't fit as well for a refund. If you have concerns about sizing, feel free to contact us or Lems customer service.Sizing Tip #1: To create additional roominess within the boot, we suggest removing the included (optional) boot liner/insole; this action does not, in any way, affect the performance of the boot. Optionally, and to enhance balance, posture, agility, and general foot/body awareness, you might consider adding thin, flexible Naboso insoles instead. Sizing Tip #2: Correct Toes toe spacers will often add width and length to the foot. If you’re planning to wear Correct Toes with your footwear, we recommend sizing up, especially if you are on the border between sizes. Videos:Natural Foot PostureWho Should Use Orthotics?Origin of Natural Foot CarePronation vs. OverpronationTop Exercises for Feet & ToesShoe Liner Test & Pronation ExplainedHow to Strengthen Intrinsic Foot MusclesShoe Sizing Techniques: Traditional vs. NaturalArticles:Foot Anatomy 101The Shoe Cushioning MythDefinition of a Healthy ShoeWhat is Natural Arch Support?Problematic Shoe Design FeaturesSix Reasons to Realign the Big ToeHow to Transition to Minimalist ShoesSix Ways to Restore Foot Health After Surgery