Filling Material: Synthetic fiber (specifically EPS foam particles).

Material: Synthetic fiber (the description mentions "high-quality particles").

Description: This U-shaped pillow is designed to help maintain proper head and neck alignment while sitting and traveling. It's made of high-quality particles, likely referring to EPS foam particles. The pillow molds perfectly to your neck and is suitable for travel or use as neck support anywhere you like.

Specification:

Cleaning Instructions for Memory Cotton U-shaped Pillow:

• The U-shaped pillow jacket is removable and can be washed by hand or machine.
• However, the inner core (likely the EPS foam particles) does not need to be cleaned.
• It's important not to put the inner core into the washing machine to avoid damaging the structure of the memory cotton and extending its service life.