PHYSALIS U-Shape Proto Middle-Cut Men's Cotton Bloomers, School Gymnastics Wear, S-4L, All Colors

Step into specialized Japanese athletic design with the Physalis U-Shape Proto Middle Cut School Bloomers. This is a rare, retailer-specific model, produced in small quantities before the S-shape proto high cut version came along. The design takes direct inspiration from sports-maker school bloomers, reimagined here in 100% cotton for a snug, sturdy fit without any bagginess.

Unlike the conservative G-type line, this U-shape model is built with mobility in mind. It features a shallow rise, a narrow crotch width, and a strong, close cut. The leg opening is gentler than the R-type's, striking a careful balance between comfort and freedom of movement; by most accounts, this was about as far as that balance could be pushed.

Japanese school gymnastics wear has a rich history of functional evolution, with regional retailers and makers crafting specialized cuts for different movement needs. This middle cut prototype captures a fascinating moment in that design tradition. Brand new, available in all colors, sizes S to 4L.