SAFETY TESTED & TRUSTED: From BreathableBaby, the original, mesh liner with millions sold since 2002. Independently tested to comply with relevant safety standards, including BS 1877 Part 10 Domestic Bedding and BS EN 16780 for Children’s Cot Bumpers. SAFE ALTERNATIVE TO CRIB BUMPER: Helps prevent arms and legs from getting caught between slats. Unlike crib bumpers, breathable mesh allows exhaled air to pass through the fabric and mitigates the risk of carbon dioxide rebreathing. FITS STYLES WITH A 120 CM x 60 CM OR 140 x 70 CM MATTRESS: Install two 28 cm x 147 cm panels to cover 2 sides. Do not use with space saver cots, cribs, or cradles. 3 MM CLASSIC MESH WITH POLYESTER TRIM: Constructed from 3mm Classic Mesh with A.C.T. Air Channel Technology for optimal function. Light blocking rating of >85%. 100% polyester mesh. 2.54 cm polyester trim on top and bottom. EASY TO INSTALL: Adjusts to fit with hook and loop. Always install the bottom edge 2.54 cm below the top of the mattress and secure all fastenings before use. Review the instruction manual and installation video or contact customer care for assistance.