Here are two styles of Lynxking dog leash, Snap leashes and Slip leashes, suitable for you and your dogs on different occasions.SLIP LEASHES:This British-style slip lead is a leash and collar in one convenient design for walking and training. Slip leashes are designed to give you a bit more control over your dog, regardless of the type of collar your dog is wearing. This leash does not clip to the dog’s collar. Instead, it slips over the dog’s head and is designed to sit high on the dog’s neck. Slip leads are helpful for training a dog not to pull and are often used during dog shows Snap Leashes:Snap leashes are basic leads that clip to your dog’s collar or harness. If you have a dog that walks nicely on a leash, this is probably the type of leash you’ll want to go with. It gives you some flexibility because you can always clip the leash to any type of training collar if necessary.Both of slip leashes and snap leashes are made by the mountain climbing rope, although it is very heavy duty, but it is very light and very soft. Material: Polypropylene Size:Small 3/8" (9.5mm)thick, 6 foot / 72 in / 185 cm in total length; Large 1/2" (12.8mm)thick , 5 foot / 60 in / 160 cm in total length; Large 1/2" (12.8mm)thick , 6 foot / 72 in / 185 cm in total length; Large 1/2" (12.8mm)thick , 8 foot / 96 in / 244cm in total length; Color: Black, Royal Blue,Orange,Pink,Grey,Purple, Red.