Obasan - Organic cotton mattress protector Obasan This item is only available for purchase online. Please allow approximately 2 to 3 business days before it is shipped. This delay can slightly vary depending on exceptional circumstances such as vacations or holidays. Obasan has been handmaking mattresses and linen entirely from organic materials since 1985. Thanks to an extensive know-how and strong ecological awareness, the Ontario company offers pieces of incomparable quality. Crafted from a skillfully textured stretch cotton fabric, this piece protects your mattress from stains, body oil and moisture. Plush and supple, it will help you gently slip away to dreamland. 100% organic cotton Handmade in Ottawa