An adult sized inflatable swim vest that will grip you so hard you'd think you might be drowning and losing your breath — even without any water nearby. Includes a headrest which is a rare thing to see on adult sized vests. The main chamber valve is also located in a convenient location to inflate it yourself while wearing. The extra inner air chamber provides an all round grip around your body in a variety of pressures, from a nice tight hug to a complete restraint making it hard to even breathe. And there is an automatic version available too. You can have the inner chamber inflated to give you a nice warm hug... which turns into a full on crushing grip once you pull the string and the outer chamber pops up with a nice loud whoosh! The yellow version is made out of flexible glossy TPU, and the black version is made out of super thin black glossy PVC — looking almost like latex when wet! Comes in a single size that's roughly an M~L on the scale of most commercially available vests. With the inner chamber being pretty big, though, you can probably use it to adjust the size and fit to your comfort. [WARNING] - NOT A LIFESAVING DEVICE. DO NOT USE ON WATER. For decoration/cosplay use only. - TAKE EXTREME CARE when using the restraint function. This vest can compress you very tightly, to the point of restricting breathing completely. Take extreme caution to prevent accidents and avoid using it alone. - Use of the automatic inflation function is AT YOUR OWN RISK. Do not use automatic inflation on an already inflated vest, or it may pop and even violently explode (Check out that one automatic ring video we have in stock to see how that happens ;-) - Do not overinflate, especially the black PVC version — the material is pretty thin. Probably best to inflate after wearing. - Do not inflate to the point wearing the vest is causing trouble moving or breathing, and have someone check in on you every now and then. Take necessary precautions to prevent suffocation and accidents. We cannot be held responsible for anything that might happen as a result of use of this product.