I purchased this bicep pad (size small) for my son, he 12 and measures 5’6” and 140lbs. I picked this pad because the Under Armor Revenant shoulder pads bicep pads are one a piece construction. The Epoch ones having a two piece construction offers him more comfort as well as greater unhindered movement. The pads strap to his arm on multiple points which is a great feature in keeping the pads in place during contact. I should say that he had not used these pads as of yet in a true game situation but he has worn them playing wall ball and shooting on our cage. His other protective pads are from Epochs Integra X line, all excellent products.