Shell: 100% mulberry silk on both sides, 19mm, 22mm, 25mm or 30mm

Filling Quality: 100% mulberry silk fiber & sponge

Filling Weight: 8-12g

Elastic strap: High quality elastic strap, width is about 2cm

Size: 20.5×9.3cm

Benefits: Lightweight and breathable. You could hardly feel that you are wearing anything when you fall asleep. Blocks out bright sun light completely and s healthy and pleasant sleep.

Easy care: Hand wash, or machine wash cold in delicate cycle in cold water, separately from other items.