【Perfect fit】 This bassinet mattress fit for Halo Bassinest Swivel/Luxe/Glide/Flex/Premiere Series Sleeper (30” x 18”x 2”) . Ultra-lightweight design makes it ideal for travel, nursery, or grandparents’ house 【Dual-Season Baby Mattress】: 3D honeycomb foam (98% better airflow) with summer-cool 98% breathable mesh & winter-warm 35% Tencel, 【Machine Washable】The bassinet mattress cover is made from 35% Tencel and 65% Polyester fabric, ensuring it is machine washable for easy maintenance. It boasts a low hypoallergenic quality, 【Waterproof Tencel cover】Bassinet mattress cover is made of high quality TPU waterproof membrane that Effectively preventing liquid Spills & Nighttime Accidents Please confirm the bed size before placing an order If for any reason you are not satisfied with our product, please contact us directly. breathable bassinet mattress