This product is a cost friendly replacement for weight machines gym and is actually a portable gym. STRENGTHENING YOUR SHIN - The and hip helper is a long term solution for products like the fascia stretcher and nordic hamstring curl and leg extension machine TIBIALIS EQUIPMENT - Unlike any tibialis machine or knee trainer - This for makes the knees over toes equipment list shin splints leg relief support EXTRA UTILITY - an increased range of motion that isn't offered with other products Ben knees over toes inspired monkey foot little leg workout equipment NO EXPENSIVE EQUIPMENT NEEDED - This product has a similar concept to the monkey feet weight lifting and strength monkey feet dumbbell attachment. Material: Nylon colour: black Package Contents: 1 x ankle strap Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.