Functional, high quality, bespoke, beautiful The standard waterproof protector is a high-quality item designed to keep baby's mattress clean & dry. They are handmade by a mum with four kids who thinks about practicality & durability in design. Made with a premium quality polyester knit fabric with a polyurethane laminate (PUL) waterproof layer on the underside, this protector is machine washable & extremely hard wearing. The PUL fabric has been shown to endure 300 washes at 90 degrees C & still show no signs of wear. PUL is a soft & quiet fabric; there will be no noisy crinkling with this protector! The mattress protector has a polycotton skirt with premium elastic for a firm fit. The result is a quality item that will last long after baby has grown out of the cot. This protector is perfect to use underneath a woollen underlay, offering waterproof protection to the mattress. Always use with a fitted sheet on top. Stokke Sleepi Mini V2 mattress: Thickness: 9 cm. Oval shape with length 75 cm. & width 58 cm. Stokke Sleepi Mini V3 mattress: Thickness: 8.4 cm / 3.3 in. Oval shape with length 76.4 cm / 30.1 in x 59 cm / 23.2 in Care instructions Normal machine wash. This protector may be tumble dried; however, that this may reduce the life expectancy of the protector. Line dry where possible. Stokke Sleepi Mini Bassinet V2 Or V3 Standard Waterproof Mattress Protector/S