
Flux Footwear
USA · Est. 2020 · Mid-range
Flux Footwear is a US shoe brand that describes itself as founded in 2020. Its founding team includes Isaac Mertens and Zach Frey; Frey brought experience as a footwear designer at Reebok. The brand set out to make shoes that allow more natural foot movement while still offering styles for training and daily wear. The range includes the Adapt Trainer, Adapt Runner and Adapt Trail Runner. Wide toe boxes and zero-drop soles—where the heel and forefoot sit at the same height—are recurring features. The models serve different uses: the knit trainer prioritises flexibility, while the runners add cushioning or features suited to trails. Flux describes its footwear as barefoot-inspired, but shoppers should compare the sole and cushioning of each model rather than assume every pair feels the same underfoot. Flux sells through its official website, with product-specific sizing and return information. People new to this type of shoe may find the brand’s guidance on gradually getting used to the fit useful before choosing one for regular training.






















