Keep playtime safe, happy, and comfortable with the BalanceFrom 9 Color Thick Interlocking Letter Puzzle Foam Exercise Play Mats.Make playtime safer with 36-square feet of comfortable and colorful floor coverage. Coming in 9 colors with alphabet letter cutouts, these interlocking play mats feature a non-slip design to stay in 1 place on the floor. Mats measure 0.4-inches thick to comfortably cushion your spine, hips, knees, and elbows to protect against rambunctious energy or accidental falls. Each mat gives 1-square foot of coverage and interlocks in whatever puzzle pattern you need to secure your floor space. Included edges help define a single border or open room to make several to suit your floor plan and play space. Moisture-blocking technology paired with high-quality EVA foam simplifies cleanup of accidental (or intentional!) spills. The foam tested free of lead, BTA's, and phthalates while meeting or exceeding US toy safety standards. For older audiences or added fun, link these squares together to form tunnels, boxes, or the ultimate fort. Transform your daycare, home playroom, or after-school program with the BalanceFrom 9 Color Thick Interlocking Letter Puzzle Foam Exercise Play Mats.