This item is brand new, unused, and unopened. I am also considering lowering the price, so please feel free to contact me. The GUYY EVAPO Cool Vest, featuring triple cooling technology, is easy to put on in just 3 steps. - Model Name: GUYY EVAPO - Technology: Triple Cooling Technology - How to Use: Easy to put on in 3 steps - Size: M Fast-cooling evaporative cooling vest. Excellent breathability! No sticky feeling on the body! The special fabric and fast evaporation system make it highly effective as an inner layer for workwear with fans! Increased surface area of the special material for enhanced cooling sensation! Triple cooling technology with a 3-layer structure of special fabric. The inner ice silk fabric absorbs heat from the body and exchanges it with cold water. The middle layer of special fabric locks in the absorbed water and generates and releases cool air through a fast evaporation system, creating a cooling effect. The outer mesh fabric is breathable and has excellent drying properties, keeping the body clean. Features Lightweight: Vest body weighs approximately 200g, approximately 500g when wet Powerful cooling sensation: Keeps the temperature 6-10 degrees Celsius lower than the surrounding temperature Long-lasting cooling: No need for ice packs or power. Cooling lasts for 2-3 hours after the first soaking in water Waterproof x Breathable: The inner and outer layers are waterproof and breathable, keeping the body dry at all times Easy to use! Step-by-step flow Soak in water: Soak the vest body in clean water for about 2-3 minutes until it absorbs water. Wring out: Wring out excess water from the vest body. Spread and wear: Spread out the vest body and wear it. * Repeat the above steps when the water runs out. * Hand wash with water for cleaning.