Name: SUBU Originals F-Line
Colorway: Matcha, Matcha
SKU: N/A
MSRP: ¥5,280 JPY (approx. $35 USD)
Release Date: Available now
Where to Buy: SUBU
SUBU has introduced two new colorways of its ORIGINALS F-LINE sandal, "Lavender" and "Matcha," for the 2026 fall and winter season. Rather than a warm-weather slide, the F-LINE is engineered as a cold-season sandal that can be worn on bare feet, using its layered construction to trap heat where conventional open footwear leaves it exposed.
The heart of the design is a four-layer insole that gives the sandal its cushioning and thermal payoff. Underfoot, those stacked layers are tuned to deliver a plush, settled feel that the brand positions as more comfortable than standard house footwear, while the structure hugs the whole foot for a secure fit. It is the part of the build doing the quiet work, turning a slip-on silhouette into something that holds the foot rather than simply covering it.
Warmth comes from the materials wrapped around that base. The interior uses a brushed, napped fabric lining that surrounds bare skin in a down-like softness, the kind of insulation associated with a winter jacket rather than a sandal. That lining is what makes barefoot use viable in low temperatures, letting the wearer step outside without socks for quick errands without the discomfort a normal sandal would bring.
The outer shell and sole round out the functional package. Up top, a nylon upper carries a slight sheen and handles the elements, while the insole itself is made from a brushed polyester and the sole from synthetic rubber for grip and durability. The result is a self-contained system where each layer, from upper to footbed to outsole, is assigned a job in keeping the foot warm, cushioned and planted.
Color separates the two releases within that shared construction. "Lavender" arrives as a soft, pale purple with a nylon gloss that keeps the sweetness from tipping into saccharine, a lighter note for a season otherwise dominated by dark footwear. "Matcha" takes the opposite tack, a deep, calm green drawn from the tones of the traditional Japanese home that reads as understated yet still stands out against the winter default of black and gray.