... Really just a 6cm thick, tough but lightweight foam with naps. At the beginning you may wonder what you should do now with this thing, to practice except the balance. The pad is supplied with a large poster on the 11 basic exercises are explained in words and pictures. I find it very troublesome but only to read, then imitate the exercise to re-read, etc. BUT: AIREX provides the ability to download free on the Internet all the exercises and then makes the thing really fun !! The exercises are divided into different categories, such as 'balance power', 'balance back' or single 5-minute exercises for certain areas of the body such as arms, abdomen, waist, etc., which can then be combined as needed and available time , The exercises are well explained and demonstrated, and although they seem simple and quiet, they have it all! Small, common, yet highly effective movement, which guarantees the whole body exercise, promote the sense of balance and not let the emotional balance be neglected. Those who want the exercise instructions in better quality, the recommended DVD itself can to buy.