Yoga Block Starter Kit - 4 Yoga Eggs - Instructional DVD - Made in USA by Three Minute Egg Comfortable, Supportive, Ergonomic, Made in USA Great for any type of yoga or Pilates practice Build Strength; improve balance and alignment; Smooth transitions in flow yoga Medium Density foam is long-lasting, lightweight and easy to clean (Water and a little bit of soap) Portable, fun and easy to use.