Most are made from foam such as EVA (Ethylene Vinyl Acetate) or EPE (Expanded Polyethylene). Many soft-block sets use foam cores with PU (polyurethane) or PU leather covers, and some listings show combinations labeled like “PU + EPE.”
Sizes vary widely. Small puzzle playhouses are often around 12" × 10.5" × 12.5" (L×W×H), while full indoor cottages can be roughly 41.5" × 32.5" × 41". Many listings also offer intermediate mat and block configurations between these extremes.
Many items feature waterproof surfaces or removable, zippered covers (commonly PU leather) and waterproof EVA surfaces. These covers or surfaces can typically be wiped clean or removed for more thorough cleaning, depending on the product description.
They support active and imaginative play: climbing, crawling, sliding, tumbling, building tunnels or forts, and creating ball pits. Playhouses also function as pretend-play cottages, reading nooks, or toy storage areas.
Many foam blocks and panels are lightweight and designed to be moved by adults or older children. Several sets feature stackable or disassemblable designs that make them easy to store when not in use.
Load limits vary by model. Example listing values include capacities like “Holds up to 66 pounds” for some climb-and-crawl sets and lower capacities such as “Holds up to 30 pounds” for smaller tumble/mat configurations; check the specific product listing for the exact limit.