Internally there is a strong polyester webbing Secure clip fastening Welded heavy duty d-ring Adjustable lengths Matching Blue Paisley Corduroy Lead available We recommend our products can be hand washed at a cool temperature unless otherwise stated. It is entirely the customer’s responsibility to ensure suitability of our products for your pets. We recommend that you check daily for any signs of wear and tear. All our dog collars are made using a contoured and secure clip fastening so this sits comfortably on your dog’s neck. Our Small, Medium, Large & XL dog collars/leads are all reinforced with an inner webbing for extra strength.