(Room temperature is lower than 33 degrees, warm water will change color, change color requires water temperature above 30 degrees)When the room temperature is lower than 33 degrees, warm water (water temperature above 30 degrees) will change colorMade of quality fiber blending material, which is breathable, soft and comfortable to wear.The color is changeable when the pants attach to the water or the An essential item for hot summer day, elegant and stylish.Suitable for sports, vacation and daily life.A great gift for yourself or someone specialSpecification:Condition: 100% Brand NewMaterial: Fiber blendingOptional Color: Yellow to Orange, Green to Blue, Blue to PurpleOptional Size: S, M, L, XL, 2XL, 3XL