The Wormhole Twin XL Bedding Blanket Twin Extra Long (Black) The original double sided bed blanket! Huge, Warm & Cozy! True Twin XL Bed Blanket - Made 90"L for 80"L Twin Extra Long Beds. Designed for Ultimate Comfort The only blanket that you slide into and become engulfed in comfort! Foot holes if your feet get hot and hand holes should you need your hands. These 'wormholes' give you what can only be described as cozy freedom!