Specially designed to deflate slowly if punctured, and provides enhanced performance due to the responsive surface design. Each slow-deflate exercise ball comes with two plugs, an inflation adapter, a measuring tape to help insure proper inflation, and a poster detailing 24 exercises. Latex-free.- PRO SERIES SCP Ball, 45cm / Yellow, For Body Height 4'7"-5'0" (140-153cm), Bulk Case Pks of 10 Balls in Poly-bags with 10 Instructional Poster, 10 ea/cs (020706) (US Only)