At UTKU, how something's made matters just as much as how it looks, and that starts with the materials. Every fabric we use, every button we sew, comes from nature. No synthetics, no shortcuts. Here's a rundown of what goes into each piece — click into any one to go deeper.
Crinkle Cotton — Our Summer Foundation
This is where UTKU began. Our crinkle cotton is the backbone of the summer collection: lightweight, breathable, textured in a way that only gets better the more you wear it. The crinkle isn't just decoration, it's built into the weave itself, so it naturally recovers its shape, wrinkles less, and travels well.
It's the kind of fabric that feels like summer without trying too hard. Grown, spun, and woven with care, finished with our signature tagua nut buttons.
Read more about crinkle cotton →
Linen — New This Season
We've always loved linen, and now it's officially part of the family. We sourced it for quality and longevity, structured yet breathable, heavier than cotton but light enough to wear all day in the heat.
It gets softer with every wash. It drapes with intention, if that doesn't sound too precious. We're starting with a focused range and growing it as the collection grows.
Read more about linen →Organic Cotton
Pure and simple. Grown without synthetic pesticides or fertilizers, which is better for the soil, better for the farmers, and better for whoever ends up wearing it. Soft against the skin, honest in its weight. Cotton the way it should be.
Read more about organic cotton →
Heavy Cotton — 400gsm
This is cotton with real presence. At 400 grams per square meter it sits somewhere between a shirt and a light jacket, structured enough to hold its shape, substantial enough to feel like an investment. It layers well and holds up over years of wear.
Read more about heavy cotton →Lona — Ecuadorian Canvas
Lona is a traditional canvas with deep roots in Ecuador. Durable and dense, used for pieces that need to work hard. It ages with purpose, picking up character the more it's used.
Read more about lona →
Baby Alpaca — Available Now
Baby alpaca is one of the rarest natural fibers in the world, sourced from the first shearing of young alpacas raised in the Andean highlands. It's extraordinarily soft, softer than cashmere, with a natural warmth that regulates temperature without bulk.
Each piece takes hours to knit. The fiber resists odor, repels water lightly, and gets softer with every wear. It's the most expensive material we work with, for good reason.
Our baby alpaca pieces are available now. Once they're gone, they're gone. We make these in small batches and don't rush reorders.
Read more about baby alpaca →
Wool — While Supplies Last
We work with a beautiful natural wool that has all the warmth and weight you'd expect: grounded, earthy, made to last through seasons. These pieces are finishing a production run, and we won't be reordering this specific material.
When the current stock is gone, that chapter closes. If you've had your eye on something in our wool range, now's the time.
Read more about wool →Coming Fall / Winter
Merino Wool
Next season we're bringing in merino wool: finer, softer, and more temperature-responsive than standard wool. It'll anchor our fall/winter collection. More to come.
Read more about merino wool →The Button Problem We Solved
Most brands use plastic buttons. We don't. Every UTKU piece is fastened with tagua nut buttons, sometimes called "vegetable ivory," sourced from Ecuador. They look like bone, feel like stone, and come entirely from a palm tree.
From tree to tagua nut to finished button, the whole process happens in Ecuador, supporting local artisans who've worked with this material for generations.
All UTKU pieces are made in our partner atelier in Ecuador, by hand, with care, in small batches.
