Material: Silicone TPU (Thermoplastic Polyurethane) 
Flexible, durable and smooth to the touch 
Size: 40 mm wide
50 ml refillable bottle included
Adjustable strap for children to adults
Cleaning Instructions: Wash with soap, warm water and refill
Use Refill bottle to fill (works best with sanitizer gels)
It is washable, re-wearable
Easy to refill.