Dashi Red & Blue Medium Dog Collar 2x35-54cm. Dashi collars are made from durable polyester, fully adjustable, with a 4-point buckle locking system for your dog's safety. Dashi's innovative technology ensures that the colors are fade-resistant. It is extremely flexible and lightweight, not weighing down your pet's neck. It is also easy to care for - simply wash the collar with water and liquid detergent. The fabric dries quickly after washing and does not require special care. Available in a variety of designs and colors with a plastic safety buckle and adjustable length. Very lightweight so it won't burden your dog.