Material: Lightweight silk fabric cuts hair friction during sleep to lessen tangled strands. This breathable material balances surface temperature and draws excess moisture away, stopping overheating for people sensitive to warmth.Size: Each cover measures 30 inches long and 20 inches wide, fitting queen-size pillows. Each set holds two pieces with back fold-over flap envelope closure, holding inserts firmly without scratchy zippers or buttons.Occasions: Neutral light gray works with all bedroom decor. It suits master bedrooms, guest rooms, dorms, RVs and rental housing, and serves as thoughtful housewarming or wedding gifts.Care: Machine washable fabric resists shrinkage and wrinkling after repeated use. Low-temperature drying preserves smooth texture and neat shape for steady long-term use.