Photo 1 of Twin XL Size Mattress or Box Spring Encasement (5" to 8" Depth) - Low Profile Twin Extra Long Waterproof Zippered Protector Hypoallergenic Premium Bed Cover Protects from Dust Allergens

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Photo 1 of Twin XL Size Mattress or Box Spring Encasement (5" to 8" Depth) - Low Profile Twin Extra Long Waterproof Zippered Protector Hypoallergenic Premium Bed Cover Protects from Dust AllergensPhoto 2 of Twin XL Size Mattress or Box Spring Encasement (5" to 8" Depth) - Low Profile Twin Extra Long Waterproof Zippered Protector Hypoallergenic Premium Bed Cover Protects from Dust Allergens