Ocean and Sand Preorders - Shipping week of September 9 The Seat Liner attaches easily to Era, Indie, Speed and Indie Twin strollers for an added layer of comfort or pop of color. Remove quickly to wash and save time, water and energy while you’re at it. Made of OEKO-TEX certified 100% recycled plastic bottles (rPET) with OEKO-TEX certified polyester batting (padding) and C-0 DWR (PFAS-Free) finish. This stroller seat liner is also available in Organic Cotton with no dye or treatments.