Fat Gripz are the new worldwide training phenomenon which helps add muscle and strength to your upper body (especially your biceps and forearms). they are used by thousands of athletes and military including champion bodybuilders Jay cutler and Phil heath, many NFL players, special forces soldiers, UFC fighters and cross fitters Fat Gripz work by instantly converting barbells, dumbbells and Pull-Up bars into thick bars so that you can train the way many Pro athletes do. Using a thicker diameter bar causes much greater muscle activation throughout the arms because it forces them to work much harder. This increased muscle activation leads to bigger, faster gains in muscle size and functional strength (especially in overall arm size). you will literally feel the difference from the very first time you use them made from a high-density material a lot like extra tough rubber - they are built to last a lifetime and won\'t compress even if lifting extreme loads. They have a slit on one side which allows them to be pulled open and fitted tightly round barbells, dumbbells and chin-up bars in less than 3 seconds. Important: to ensure you receive genuine Fat Gripz make sure the listing says sold by Amazon thick bars and thick-handled dumbbells are very expensive (thousands of dollars). Fat Gripz cost less than one tub of protein powder and will last a lifetime no need for new exercises or extra sets - just put Fat Gripz on your weights and use them during your workout to super-charge your gains. Every pair of Fat Gripz comes with a highly effective training program to help you achieve all your strength and physique goals. Whether are interested in building a Great physique, sports performance or raw strength and power Fat Gripz will help you get there faster.