The ideal collar, Hurtta Padded Collars are not only comfortable on your dog"s neck but they are also safe and easy to use. We recommend the collars for adults as well as puppies as the soft cushioning and adjustability protects your dog. Each size can be adjusted as much as 10cm. The way the collar works is it distributes the pressure of pulling across a larger area. The padding is made from Neoprene, a material which softens the stress placed on your dog"s neck and throat area. This ergonomic collar does not chafe your dog"s neck. Thanks also to the new safety lock developed for the collar, any stress caused by pulling is not placed on the clip buckle, improving the pulling strength of the collar. Please note before ordering that delivery is from Japan. We ship right away but delivery time can vary significantly. The average delivery time is about two weeks. Sometimes it only takes one week but other times it can take 3 or even 4 weeks plus. It can depend on various factors including customs. Please understand this ahead of ordering. Once we receive your order we will get to work and ship very quickly. If you have any special requests kindly message us when placing your order or soon after. Customs charges are rare but sometimes occur and are the responsibility of the buyer