The Replacement Sleeve Bottom has 4 sleeve choices:
#15 - Young Dog Sleeve made with jute is for the young or "green" dog. It provides a soft bite.
#10 - Intermediate Sleeve made with two layers of jute has a firmer barrel for a harder bite.
#19 - Synthetic Young Dog Sleeve is for young or "green" dogs and is made with bite suite material. It is flexibe and gives a soft bite.
#17 - Synthetic Intermediate Bite Sleeve is made with two layers of bite suite material and has a firmer barrel for a harder bite. This sleeve may be red or black.
ALL OF THE SLEEVES: are quilted, have a hard interior grab handle, and have leather reinforced seam tabs.
NOTE: If you are working multiple dogs, that are at different bite levels, you can use the same cuff and attach it to another sleeve bottom. When your young dog out grows the softer young dog sleeve, you can remove the sleeve and switch to the intermediate sleeve bottom. You don't have to purchase a completely new sleeve.
Putting a young dog on a bite sleeve that is too hard will discourage him from working. Dogs need to develop their bite, and this is the reason for a variety of bite materials, thickness and hardness.