The INUTEQ-H2O® Bodycool Pro-X evaporative cooling vest has a sporty design. The cooling effect will last from 2 up to 8 hours depending on ambient temperature, airflow & humidity. This product performs best in low to medium-humidity environments. The level of airflow determines the cooling effect. Wearing this vest means that you can avoid heat stress & remain comfortably cool, thus enhancing your performance level. Features Incorporates a unique cooling technology Core: INUTEQ-H2O® superabsorbent cooling fabric with antibacterial treatment Machine washable & has antibacterial properties Easy to use & re-use Lightweight, non-toxic & durable Provides up to 15º C cooling relief below ambient temperature Offers up to 8 hours of cooling comfort CE marked Activation Activation is easy: just soak in water for max. 2 minutes & gently squeeze out excess water. Your vest is now ready to wear, instantly creating evaporative cooling for up to 8 hours, depending on the ambient temperature, humidity & airflow. Sizing T-shirt size = cooling vest size Just take your T-shirt size as a reference to determine your cooling vest size