Material:

Upper: The front part of the shoe's upper is made of a moisture-repellent fabric (100% recycled PET) + knitted Woolmark opening
Lining: Mesh (100% recycled PET) + microfiber (60% polyurethane, 40% polyester)
Insole: Thermal insole 100% recycled PET. The thermal insole has built-in temperature-regulating technology that absorbs, stores, and releases heat. This smart thermo-layer responds to your feet's natural temperature changes, keeping them warm or cooling them down as needed
Outsole: SG sole (Soft Ground)
Heel: Synthetic rubber for extra reinforcement.

What we love about these barefoot shoes:
Wide toe box
Thin and flexible sole
Zero drop sole (completely flat from heel to toe)
Low shoe weight

Fit: Fits narrow to wide feet - good toe box but sits tight around the ankle Fits low to normal-high foot

Size advice: True to size

Feeling on the foot: A very comfortable and soft shoe! Incredibly easy to put on and hugs the foot comfortably. Heidi has a wide and high foot, she usually wears size 39 in her shoes. Heidi tries size 40 of this model. As Heidi has a "straight toe shape," the shoes are too tight at her little toe, and the shoes curve too sharply. Natalia has a wide but low foot, her toe shape is "tapered," and size 42 of this model fits her foot perfectly.

Care instructions: Wipe with a damp cloth and regularly treat with Collonil Protect & Care to increase the water resistance and durability of the shoes.