The Children's Factory Marshmallow Upside Downs is expanded vinyl covered foam shapes that connect with hook n loop attachments. Little engineers determine their own gross motor pathways. 15" high. To help the 6 month old thru 2s feel more secure. Expanded Vinyl - This vinyl is a puffier, thicker one-sided piece of vinyl fabric supported underneath with a cotton scrim. It is also easily cleanable and has more softness than a laminate but is less resistant to tears than our regular vinyl. Product must be placed in corner for safe use. The Children's Factory Marshmallow Upside Downs and other Children's Factory educational toys use only the best materials available.