This is a set of two waterproof quilted pads and two fitted sheets. Purchased new in May 2025. Used in rotation for about six months. While there are no noticeable stains, I've marked them as "slightly used" due to the period of use. Size: Mini size (60cm x 90cm) ● Mini size waterproof quilted pad ・ Combines the functions of a waterproof sheet and a fitted sheet. ・ With elastic corners ・ All-season material ● Mini size fitted sheet (waffle weave, plain) ・ Compatible with futon mattresses 5-6cm thick ・ Elasticated for easy fitting ・ Waffle material