Our EcoComfort Dog Collar, is the perfect combination of style, sustainability, and comfort for your pet! Made from 100% recycled plastic bottles for an eco-friendly choice. Adjustable for a perfect fit and available in four different sizes, XS is even made to fit cats. Match it with our leash and poop bag holder for a complete look! Material: 100% Recycled plastic, Zinc Alloy D Rings. How to clean Hand wash using mild soap & warm water, then towel dry or allow to air dry. Size Guide XS: Neck: 22 – 30 cm (8 - 11 in) Strap width: 1.5 cm 0.5 in S: Neck: 28 – 40 cm (11 – 15 in), Strap width: 1.5 cm 0.5 in M: Neck: 37 – 52 cm (14 – 20 in), Strap width: 2 cm 0.7 in L: Neck: 41 – 64 cm (16 in – 25 in ) Strap width: 2.5 cm 0.9 in