Wacoal Rakuraku Partner Black Straight Rubber Pants MP Size Color: Black Size: MP Size (MP size and M size are available. Please be careful.) Unused item ^ - ^ The following is quoted from the brand page: [Many pleasing features] Rakuraku Calson Popular for its denim-like appearance and ease of wear. Waist rubber replacement design. Soft waist rubber design. <Covers the silhouette and provides comfortable wear> - The stretchy and soft waist rubber is less likely to dig in and fits well.