Seaweed Tencel Tank Top – Black

A double square-neck tank in a soothing SeaCell™ × TENCEL™ blend with Icelandic seaweed minerals active at the skin surface. Square décolleté at the front, deeper cutout at the back. Built-in soft bra layer with a natural rubber elastic band sitting just under the bust for gentle support. Cropped at the natural waist.

Second-skin feel. Low compression. Mineral-rich fabric that soothes as you move.

Why This Blend Works

28% of this fabric is SeaCell™: a fiber made by embedding nutrient-rich Icelandic seaweed into the lyocell production process. The seaweed retains its natural minerals, including calcium, magnesium, and vitamin E, which are activated by your skin's natural moisture during wear. Your skin is most absorbent when it's warm and open. During exercise, this matters.

The other 67% is Lenzing-certified TENCEL™ lyocell, made from sustainably harvested wood pulp in a closed-loop process. It adds silky smoothness, fast moisture transport, and structure to the knit. Together, these two fibers create something neither does alone: a fabric that's actively nourishing your skin while performing through your hardest sessions.

We add 5% elastane, the minimum needed for stretch and recovery. The remaining 95% is plant-based fiber.

No polyester. No nylon. No synthetic performance coatings. No chemical finishes. Just fibers that work because of what they are.

Why You'll Love It

✔ SeaCell™ minerals at the skin surface: calcium, magnesium, and vitamin E activated by natural skin moisture
✔ Permanently embedded, not a coating, not a treatment, doesn't wash out
✔ Square neckline front and back: sculpted on both sides, naked shoulders, structured without compression
✔ Built-in soft bra: second inner layer with natural rubber elastic under the bust for gentle support
✔ Lenzing-certified TENCEL™ lyocell: silky smooth, fast-drying, sustainably produced
✔ Reversible wearability: clean square line whether worn forward or flipped
✔ Cropped at the natural waist: pairs with high-rise leggings, biker shorts, or skirts
✔ Natural temperature regulation: cool when it's hot, warm when it's not
✔ Odor-resistant: no chemical finish required
✔ OEKO-TEX Standard 100 certified: tested for 1,000+ harmful substances
✔ Biodegradable elastic: organic cotton and natural rubber
✔ Organic cotton labels, cotton thread: every component considered
✔ No polyester, no nylon: 95% plant-based fibers

Perfect For: Yoga and Pilates | Daily wear | Travel | Layering | Low- to medium-impact movement | Sensitive skin | Anyone who cares what their skin absorbs

Fit
True to size. Close-cut through the bodice, cropped at the natural waist on a 170cm / 5'7" model. The square necklines frame the collarbone and shoulder blades. The inner bra layer offers soft, bralette-level support for low- to medium-impact movement.

Composition
Fabric: 67% Lenzing-certified TENCEL™ lyocell, 28% SeaCell™, 5% elastane (260gsm interlock)
Inner bra layer: 67% TENCEL™ lyocell, 28% SeaCell™, 5% elastane
Elastic: 70% organic cotton, 30% natural rubber
Labels: 100% organic cotton
Thread: 100% lyocell