Car Door Protector for Dogs | Waterproof Pet Guard Vehicle Interior Seat Scratch Back Extra plastic tabs ( set of 8 ) Achieve the effects of a High Altitude Workout Efficiency when training, which helps decrease &amp; maximizes your workout time 4-Level Resistance Valve System - Increase and Conditions Lung Capacity by Creating Pulmonary Resistance Simple Usage, Ultra-Lightweight, Anatomically Designed, Non-Slip Training Strap Strengthens the Diaphragm, Trains Breathing Muscles and Improves Overall Performance in any Sport One Size Fits Most - From 120 to 230 LBS