The Tretorn hi-top shoe is a type of sneaker that covers the ankle. It typically has a canvas or leather upper with a rubber sole. The shoe may have laces or a Velcro strap to secure it to the foot. The Tretorn brand is known for its Scandinavian minimalist design, so the shoe may feature simple, clean lines and a muted color palette. The hi-top style provides additional ankle support and can also be a fashion statement.