AppleRound Set of 2 Balance Pods with 1 Pump, Domed Hedgehog Style, Blue Includes 2 pods & 1 pump in a nice color box. Each pod comes with 300 grams weight, 16.5cm/6.5in diameter base, 8.0cm/3.15in height, and 200 Kg Approx. load capacity. An ideal tool for improving balance, coordination and flexibility. Contains no US banned phthalates and heavy metal elements. Conforms to the safety requirements of EU EN71, US CPSIA & ASTM F963. Safe to use. How to adjust air pressure: Inserts the needle with the pump into the air hole for inflation; Inserts the needle only without the barrel of the pump for deflation. No additional plug needed to close the air hole. Seller Warranty: Should pump or pods faulty, please 'Contact Seller' directly (other than Amazon Customer Service) for a replacement or refund. Seller usually replies most emails in 12 hours.