Put an end to the constant reminder to “keep your elbows-in” with this revolutionary training tool. Improves your technique, form and ultimately your punching power because you will be throwing every punch accurately. Easily slips on and off with rep-designed arm loops. Constructed with a semi-elastic/polyester material that has a slight give, making it more comfortable, useful for various size fighters and also washable. Available in three sizes. Youth measures 16.5" across (arm holes 4.5" wide) by 2.5" top to bottom; Regular measures 20" across (arm holes 5.5" wide) by 3.5" top to bottom; Large measures 22" across (arm holes 6" wide) by 4.5" top to bottom Colors may vary.