Ready to upgrade your saddle? The Strider Performance Seat is a super comfy padded saddle and seat post, great for the youngest riders in your family. Choose between standard or XL post size options to get your best fit. Extra padding keeps tiny tushies comfortable for long adventures around the block. Add in the extra-long (XL) post, and your growing rider has a comfortable, padded seat with a seat post that will extend the life of their Strider 12 Balance Bike. This cushy Performance Seat with the XL seat post is also a replacement part for the Strider 14x Convertible Bike. Replace your kiddo's worn-out seat and watch them #StrideOn to more adventures! Size & Fit - XL: - Seat Height Range: 38 - 48 cm. (15 - 19 in.) - Padded Performance Seat - Seatpost Length: 293 mm. (11.5 in.) - Seatpost Diameter: 22.2 mm. (7/8 in.) - Compatible with Strider 12 and 14x Bikes