The firmness/height can be adjusted by adding water, making it suitable for different sleep positions. Filling instructions appear to be included per box.
1Pc Temperature Sensing Slow Rebound Memory Foam Water Cube Pillow Core
Mediflow Water Pillow – Hybrid Memory Foam, Orthopedic, Adjustable for Neck Pain Relief (Single)
Mediflow Original Fibre Water Pillows – Adjustable Orthopaedic Neck Support, Waterbase Cushioning – Side, Back & Front Sleepers (2 Pack)
Mediflow Elite Fibre Water Pillow – Orthopaedic, Adjustable Height & Firmness, Waterbase Support – Side, Back & Front Sleepers (Single), White
Mediflow Down-Alternative Water Pillow – Adjustable Orthopaedic Neck Support – Side, Back & Front Sleepers (Single)
Mediflow Original Fibre Water Pillow – Adjustable Neck Support, Orthopaedic, Waterbase Cushioning – Side, Back & Front Sleepers (Single)
