This Sleeve is designed for "civil work" and is designed to be worn underneath regular clothes to simulate having no arm protection.  

Features of the helper hidden sleeve:

• durable French material - nylcot 
• fitted with thickness adjustment via lacing
• complete hand protection
• protects the helper's arm and forearm
• free bending at the elbow (leather insert)
• the outer shell is reinforced by stitches that create a quilted surface
• flexible
• additional appropriate internal reinforcement and sleeve lining
• ending the sleeve with a neoprene cuff prevents it from slipping from your hand

WARNING

Please remember that using a hidden sleeve to test your dog's biting skills may be dangerous. Even professional equipment does not fully protect against possible injuries, but it certainly reduces the risk of sustaining them. Moreover, if wounds do occur, their size is reduced compared to the situation if the dog was checked to bite without using protection. The sleeve should never be used by novice trainers and/or people without adequate experience in working with dogs, as it may carry the risk of very serious injuries. Serious consequences in the form of wounds and other injuries will occur if the product is not used properly.