<p><span style="color:rgb(159, 5, 0);font-size:18px">Features</span><span style="font-size:16px"><br/>1.Breathing exercise equipment to challenge yourself for better exercise and improve overall endurance.<br/>2.Vital capacity - it helps to expand and improve vital capacity without the risk of having to do a lot of aerobic exercise and burning calories.<br/>3.The portable device - Adventure lung breathing training instrument is very compact. Easy to carry.<br/>4.The adjustable resistance dial makes the simplest task more difficult, and can exercise more intensely according to your needs.<br/><br/></span><span style="color:rgb(159, 5, 0);font-size:18px">Specifications</span><span style="font-size:16px"><br/>Material: silicone<br/>Product size: 9.5 * 5.5cm/3.74*2.16in<br/></span></p><br/><p><span style="color:rgb(159, 5, 0);font-size:18px">Package List</span></p><p><span style="font-size:16px">1 X Lung Fitness Trainer</span></p><p><span style="font-size:16px"><br/></span><span style="color:rgb(159, 5, 0);font-size:18px">Note</span><span style="font-size:16px"><br/>Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you!<br/>Please allow 1-3cm measuring deviation due to manual measurement.</span></p><p></p>