A set of protective sleeves comprising two or more protective sleeves for training dogs for military law enforcement, security, protection and sport purposes, comprising sleeves with similar construction and appearance; each sleeve offering a different level of resistance to compression. The sleeves have one-piece handles that are contoured to fit the trainer's hand and can be mounted in a plurality of different orientations and locations. The sleeves have one-piece end caps with ledges for attachment to the sleeve and holes to provide ventilation. Different variations of leaf springs can be used in each sleeve to set the level of resistance to compression of the sleeve. Each sleeve in the set cannot be visually distinguished from the other sleeves by the dog in advance of the training, and each sleeve has similar construction so that it is necessary for the trainer to become adept at handling only one type of sleeve.