Crafted from high-quality plastic for durability and lightweight handling.Equipped with cutting-edge biostress feedback technology for accurate measurement of stress levels.Enhances training by focusing on core muscle activation for optimal recovery.Safe and chemical-free manufacturing ensures a safe training experience.Ideal for daily use in various training environments, combining quality and performance.This Advanced Biostress Feedback instrument accurately measures and responds to your body's stress levels, enhancing your training by focusing on core muscle activation for optimal recovery. Committed to your health and safety, this product is manufactured without the use of high-concern chemicals, ensuring a safe training experience without compromising on quality or performance.Color: As ShownMaterial: PVCPackage Contents:1x Functional Recovery Training Pressure GaugeOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.