TANSY SWIM THONG | Merino wool & Alpaca Swimwear

From $78.00

TANSY SWIM THONG
High cut swim thong made of sustainable materials including merino wool and alpaca.

AlpacaAlpaca
Merino WoolMerino Wool
Good for SwimmingGood for Swimming
Magnetic ClosureMagnetic Closure

Description

TANSY SWIM THONG

The Tansy high cut swim thong is handmade with sustainable and quick drying fabric options including merino wool and alpaca. Its high-cut silhouette and double-layer breathable construction make it a comfortable choice for everyday wear as well as for swimming.

Features:

  • Two 3/4″ rings or 1/2″ magnetic clasps in back
  • Double fabric layer
  • 1/4″ Elastics in waist and 1/8″ elastic in leg openings

Handmade in Vermont, USA

 

Brown set photos ©JamCreativeVT

Additional information

Weight .1 lbs
Size

XS, S, M, L, XL, 2X, 3X

Color

Black Merino, Brown Merino, Charcoal Alpaca

Ring or Clasp?

3/4" Ring, 1/2" Magnetic Clasp

Good for Swimwear

This item is great for swimming in!

Magnet

This item contains magnetic closures.

Wool Care

Cold Hand Wash or Gentle Cycle, Hang or Dry Flat

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Natural Swimwear FAQ

What is natural or plastic-free swimwear made from?

While this natural swimwear is not 100% plastic free, it is made primarily from natural fibers including merino wool, alpaca, and modal. Most styles are approximately 95% natural fiber, with about 5% spandex, and elastics and straps include nylon and spandex for structure and durability.

This blend allows the swimwear to maintain shape, comfort, and longevity while still prioritizing natural materials.

Both merino wool and alpaca are breathable, soft, and exceptionally low in moisture absorption—making them uniquely suited for swimwear. After swimming, they shed water quickly and feel dry to the touch, keeping you light and comfortable.

Merino is lightweight, versatile, and ideal for all-day wear. Ultrafine merino feel soft against the skin while naturally wicking moisture—making it a great choice for both swimming and movement.

Alpaca offers an ultra-soft, more luxurious feel. Its naturally hollow fibers help regulate temperature while repelling water, absorbing even less moisture than merino. It’s also hypoallergenic and rare in stretch fabrics.

The alpaca fabric is blended with modal—a plant-based rayon fiber—adding strength, stability, and durability, especially when wet.

While natural—and excellent for undergarments—cotton tends to feel cold when wet and retains a high amount of water, leading to a heavy, slow-drying feel after swimming.

Merino wool and alpaca behave differently, absorbing far less moisture and drying quickly for a lighter, more comfortable experience.

Take gentle care of your swimsuit to help preserve its natural fibers:

  • Rinse in cold water immediately after swimming
  • Hand-wash in cold water, or use a gentle machine cycle in a garment bag (this keeps it from angling and magnets from hitting the machine) 
  • Hang or lay flat to dry in the shade
  • Do not tumble dry

It’s not ideal.

While 95% merino wool or alpaca blend underwear will dry quickly, it may be see-through because it is made from a single layer of fabric, unlike the swimwear. Additionally, most underwear styles have little to no elastic in the seams, whereas swimwear includes elastics in the leg openings and waist for a secure fit.

Yes!

Since all Hanna Broer bras are made with a double layer of fabric and contain elastics to keep a good hold, you can use the 95% merino bras for swimming. The merino blends with Tencel™ may be less suitable, since they may be see though, and the merino content is much lower.

Yes!

Natural swimwear made from merino wool and alpaca is breathable and quick drying, making it a comfortable option for everyday undergarments. They have more hold and structure than most of the single layer underwear styles, which is great if you like a secure fit. 

Not for a modern, stretchy swimsuit.

While advancements are being made in biodegradable materials, it is not currently possible to create snug-fitting, supportive, and durable swimwear without elastane (spandex) or synthetic elastics.

No.

Natural swimwear is functional, comfortable, and breathable but will feel and behave differently compared to synthetic swimwear.

All items suitable for swimming are listed in the “swimwear” category.

You can also look for the “good for swimming” icon on each product page.

Good for swimming icon

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