Onsen's relaxed, minimalist towels were already our go-to, and now we've taken their hue to our preferred end of the spectrum. Made with American-grown Supima cotton, these special edition black towels are made with longer fibers in a weave pattern that provides an exceptionally soft texture that's also fast-drying. But the key to this obsessively designed towel isn't what Onsen added, but rather what they eliminated. Standard bath towels go through a chemical bathing process so they feel fluffy — at least at first. Instead of short-lived softness that washes away, Onsen builds in softness from the beginning and utilizes no chemical processes. Bypassing these common treatments eliminates the artificial fluff, resulting instead in a naturally plush surface that just gets better and better, making this quite possibly the last bath towel you'll need.