Pro Thumb Wrestling is a full-size, officially sanctioned professional thumb wrestling ring. All contenders must insert their thumbs through the opposite corner holes and come out wrestling. Start your thumb workouts and conditioning now because it s gonna be quite a battle for the title and you wouldn t want to get a cramp. The Thumb Wrestling Ring is for serious thumb wrestling professionals only!! (Well, not really.) The Thumb Wrestling Ring is made of high quality plastic and flexible ropes along with real elastic turnbuckles. The ring s holes are designed for all sizes of thumbs. Below the ring is a high impact, shock resistant handle. An Official Rulebook is included with the Thumb Wrestling Ring. Sections include "How To Win," "How To Lose," as well as sections on the time honored traditions of Cheating, Whining and Betting. On betting, The Official Thumb Wrestling Ring Rulebook says: "We do not advocate betting in any form. We have never and never will unless there is a large sum of money involved and there is absolutely no way you can lose." Now that s some real advice. Measuring approximately 12cm x 12cm , the Thumb Wrestling Ring requires no assembly or batteries so you can get right down to business. Perfectly compact and easily mobile, ready to be transported to any arena necessary. Just make sure you win because there s no fun in losing!