Checkered neck cooler using cooling gel. - Brand: SUO - Design: Checkered - Model: SUO 18 - Material: Uses cooling gel - Color: Blue系 (Blue-based) - Shape: U-shaped Thank you for viewing. ☆2024 Model☆ I bought the wrong size, so I'm selling it. I opened the package, but I only tried it on. Please be careful as this is 【Size S】. I repurchased and am using size M, but it doesn't condense easily, and it's 18°C, so it's very cold and refreshing. I have three other brands, but SUO 18 is my favorite.