We offer only Medical grade silicone for ALL silicone plugs and bondage ("Manhood AcademyTM - safe to put in"TM). Medical grade silicone is odorless and hypoallergenic. "Boy Trainer" - designed to be locked with padlock (included) Compare Birdlocked "The Punisher" The "Boy Trainer" sheath is equipped with inside spikes made of flexible silicone spikes which will bite into the head of your cock as soon as you start to get hard. The spikes are made of flexible silicone, but prolonged usage may provoke extreme sensations and annoy the piss out of your boy. This is the device to use to punish him for a few days or if he's a Pig, keep him locked up in this one all the time. As in any of these chastity devices, including the CB3000 series, they are not escape proof. With some maneuvering and pulling you can slip them off. It's the nature of plastic or silicone. But these are so comfortable to wear, you won't really want to get out of them. Plus since these are made from a soft thick silicone, they can't crack or break like the plastic sheaths may. Measurements: Total length: 3.5" , Triangle base Ring : approx. 1.75" (45cm) inside diameter , 1.25" wide, 1" thick! Sheath length: 2.53", Tube diameter: 1 3/8" ( in widest part) Set : 1. Cage. 2. 1 brass padlock with keys. 3. White Gift box with Authenticity charm Material: Premium-grade silicone. Do not use with silicone-based lubricant. If similar item sold without an AUTHENTICITY charm OR IMPORTED, you probably received NOT a Manhood AcademyTMTM product, so it's quality and proper functioning can not be guaranteed .

• Compare to Birdlocked "The Punisher"
• Made of Medical Grade Silicone - easy to wash and hypoallergenic
• Triangle base ring (approx. 1.75" (45mm) inside diameter) is more comfort conscious of the cock and balls
• Smooth outside and Spiked inside - see photos
• Made in USA (not Imported) by Manhood AcademyTM

Compare to Birdlocked "The Punisher"Manhood Academy (Amazon Registered Brand) , USA