sashless
/ˈsæʃlɪs/Definitions
1. adjective
without a sash or having a sash removed
“The traditional sashless design of this Japanese garment adds a touch of elegance to its wearer.”
2. adjective
lacking or devoid of a sash, or a sash-like feature
“The new model of this car is sashless, featuring a sleek and minimalist design.”