SIZES: CRIB - 28 x 52″ (71 x 132 cm) COT - 24 x 48″ (60 x 120 cm) FILLING: 100% Oeko-Tex Certified Wool COVER OPTIONS: 100% Cotton (heavyweight, unbleached, Oeko-Tex certified) 100% Virgin Wool (Oeko-Tex certified) 59% Linen / 41% Cotton (Oeko-Tex certified) FEATURES: Durable metal zippers on the 2 longer sides of the mattress so you can easily adjust the wool, add or remove wool if necessary. We can also offer plastic zippers upon request. Handmade and hand-tufted with natural linen thread. Tufting goes through the whole mattress to keep the filling in place. Complimentary mending kit included. CARE Wool toppers will compress 10-15% during the first few months of use. Wool settles and dips where your body lays on it. This is a natural process and cannot be avoided. To ensure the settlement occurs evenly you simply need to rotate it at least once weekly in the first 2-3 months or until the wool compresses, and regularly thereafter. CLEANING: The ticking is not removable and needs to be spot cleaned. WHY WOOL? Some of the many reasons people choose wool over synthetic alternatives: Regulates body moisture, especially beneficial to people who sweat during the night Helps you avoid chemicals that may be harmful even if ‘declared as safe’ Reduces exposure to VOCs in your home – wool has no off-gassing and zero VOCs Suitable for people with MCS and other chemical sensitivities