Bionix Pull Up Assistance Bands Thick, Heavy & Long Latex Exercise Resistance Training Loop Band Set Chin Up Assist, Stretching, Workout, Powerlifting, Yoga Pilates, Legs Glutes Black 25lb bestsellers_healthUK_Sep2023 000 strokes per minute means home2023 000 strokes per minute means sparkling teeth and healthy gums FUN TO SHRINK: Designs will shrink to 20% of its original size and thicken to a durable plastic Plan appropriately for the desired finished size you can exercise with these gym straps HEFTY HEAVY RESISTANCE PULL UP POWER BANDS: Youll notice straight away that Bionix exercise fitness bands are just a little thicker and more substantial than those you may have tried in the past