A minimalist sandal for a true bare foot feel. The Freet Zennor we know and love has had some upgrades this year. The Zennor 2 has a bottle yarn upper with a lovely open weave improving breathability. It feels even more comfortable to wear than the original model but still has the clever adjustable heel strap which makes it easy to put on and an elastic lace to make it fit like a glove. It's vegan, fully flexible with Freet's signature roomy toe box. Upper BottleYarn - open weave: breathable, durable, moisture moving mesh, made from recycled plastic bottles. Adjustable heel velcro strap and elasticated lace to fine tune fit. Lining Unlined for complete breathability. Outsole TrailGrip: 3.0 mm tread gives good grip and durability on a variety of trail surfaces. Waterproofness Not waterproof, highly breathable. Use a waterproof sock for cold / wet conditions. Weight 440 grams pair size 42. Stack Height 9 mm with insole; 6 mm without insole, zero drop. Care Hand wash with luke warm water and mild detergent. Air dry. We do not recommend putting your Freets in the washing machine or dryer.