Inflated Cushion Insert: Designed to fit IKEA Antilop High Chairs & Others similar shape chairs, also work as replacement for related air leaking cushions, Fabric cover is recommended to be used together: Fabric cover is NOT included here, fit most brands' covers on the market, 100% Safe & New Material (Official Labs tested by BV): BPA, Lead, Cadimum & Phthalate FREE(California Proposition 65 List of Chemicals), How to inflate & clean: Pinch plug base to inflate faster & easier, rear-facing towards babies & toddlers, wipe clean only, remove the insert when machine wash the cushion covers, Size: Approx - 27.5" L x 13.8" W (inflated): The insert itself is slightly larger than fabric cover but could fit most covers when partially or fully inflated, Notice: Inflatable Inserts may deflate (approx. 1.2%-1.5%) after a long time of pressing as edges are heat-welded by machines automatically, feel free to ask for FREE insert(s) as replacement in next 3-6 months (no need to change the cover)!