This is a simple anti-slip device that attaches with Velcro tape. It's designed for use on icy roads and packed snow, and can be attached to most shoes, such as sneakers and business shoes. It's lightweight and easy to carry. (Comes with a convenient nylon waterproof storage case) ■ Materials: Body / Synthetic rubber, Tape / Nylon Pins/Metal fittings / Steel, Storage case / Nylon ■ Weight: Approximately 48g (per piece) ■ Size: Synthetic rubber part / Approximately 49 x 116mm Tape / Approximately 325mm each ◾️ Usage Notes ・Cannot be attached if the circumference of the attachment area is less than 27cm. ・Do not use on dry paved surfaces without snow or ice. ・After use, wipe off moisture and store in a place away from direct sunlight and high temperature/humidity. ・Do not use with ski boots. ・Make sure snow and ice do not get on the Velcro tape's adhesive surface during use. ・Please be careful as it may come off due to vigorous movement. ・Do not use indoors. Thank you for viewing.