Introduction Sleeve is for 3+ month puppies. Working Puppy is a progression sleeve for 7-9 month puppies. Puppy Tug is small enough for young puppies. Dean & Tyler Professional Bundle of 4; One Puppy Sleeve + One Working Puppy Sleeve + Two Pocket Tugs (French and Jute) - 12" x 2"; Colors May Vary Available in Jute, synthetic French Linen, leather and fire hose material Bite Tugs are available in different sizes Sleeves are ultra lightweight, soft yet durable