The price on this Audio Yoga Mat (4mm) drops from $29.98 to $14.99 to $11.99 with free shipping when you enter code FESTIVE at checkout. This yoga mat was listed as one of 50 great gifts in this year's Holiday Gift Guide in the New York Post. It features a built-in speaker that will connect to an iPod/iPhone or virtually any other device with a headphone jack. This mat has a 4.6 out of 5 star rating from 14 reviewers. There is no sales tax (except CO, OH, NY).