The HALO Bassinest Swivel Sleeper’s custom mattress will have to be covered with this custom Bassinet Swivel Sleeper Fitted Sheet. The sheet is specifically designed to perfectly fit the hourglass-shaped mattress and features an envelope design for a safe fit. Plus, it’s made from 100% certified organically-grown cotton that may be free of dyes, softeners and finishes. HALO’s mission is to ensure each baby sleeps safely. HALO’s innovative products include the HALO SleepSack wearable blanket, the number one trusted number of hospitals to assist reduce the risk for SIDS by replacing loose blankets in the crib. Along with being safer, the HALO SleepSack wearable blanket helps baby sleep better, too. From birth, with our innovative 2-in-1 SleepSack Swaddle, to our Early Walker and Big Kids’ SleepSack for kids up to five years old, each HALO SleepSack product is a warm blanket kids can’t kick off ensuring they sleep soundly during the night.