Double airbag design: the arm bands are designed with 2 airbags for a more safer and comfortable wearing experience; It is recommended that the arm bands are supposed to be filled with about 70 percent air, so that people will feel more comfortable when putting the float swimming rings on Comfortable to wear: these inflatable arm floaties are made of soft and waterproof plastic fabric, which causes no discomfort to your skin; There are no scratches on these water wings swim floaties, which allows you to wear comfortably and easily to take off and put on Helper for swimming learners: the inflatable swimming bands are non-toxic and safe, helping people reduce the difficulty in learning swimming, improve people's interest and confidence in swimming, and shorten the learning cycle Simple to use: the water sleeves swim floats come without scratches, and you can easily put them on and take them off; If you don't use them, just outgoing gas and fold them up, which will take up a little space; They are easy to store and carry; Drum-type arm bands can be adjusted to the natural shape of the arms for a snug fit Notes: all inflatable float swimming bands have a break rate which is detected 1 - 5 of the air leakage rate based on 1000; Please contact the customer service for a nice solution if you receive broken arm swimming sleeves