Gaiam Yoga Block Latex-Free EVA Foam Soft Non-Slip Surface $3.00 – Amazon

• Gaiam Yoga Block Latex-Free EVA Foam Soft Non-Slip Surface $3.00
  (Dimensions: 9"W x 6"H x 4"D / Weight: 4.6oz) – Limit 3 per Acct.
  • Lush Teal
  • Storm Gray
  • Fuchsia
  • Vivid Blue

(These are also great for little kids to sit on)