Andes-adapted for changing temperatures
Alpacas evolved where days run warm and nights turn cold. Their semi-hollow fibers trap insulating air, helping you stay comfortable as the temperature changes.
Match your first layer to a steadier pace. This women's Alpaca sports bra pairs a racerback cut with low to medium support for walking, yoga, and lower-impact movement.
This size is currently out of stock. Get notified when it's back.
This size is currently out of stock. Get notified when it's back.
Free US shipping on orders over $200.
Final sale for hygiene reasons. This intimate apparel can't be returned or refunded. Defective-item claims are handled separately under our warranty.
Your layer starts with Alpaca wool from Peru. Its smooth fiber surface gives the knit a soft feel, while the knit structure allows air to move through as you do.
The racerback design offers low to medium support for walking, yoga, and other lower-impact activity.
The 160 g/m² fabric keeps the knit light beneath your top.
Use your body measurements to choose your size. These are body ranges, not flat garment measurements.
| Size | Chest | Waist |
|---|---|---|
| XS | 31 - 33.5 in | 23 - 26 in |
| S | 33.5 - 36 in | 26 - 29 in |
| M | 36 - 39 in | 29 - 31.5 in |
| L | 39 - 42 in | 31.5 - 34 in |
| XL | 42 - 44.5 in | 34 - 37 in |
| XXL | 44.5 - 47 in | 37 - 40 in |
| Size | Chest | Waist |
|---|---|---|
| XS | 79 - 85 cm | 59 - 66 cm |
| S | 85 - 92 cm | 66 - 73 cm |
| M | 92 - 99 cm | 73 - 80 cm |
| L | 99 - 106 cm | 80 - 87 cm |
| XL | 106 - 113 cm | 87 - 94 cm |
| XXL | 113 - 120 cm | 94 - 101 cm |
Hand wash or machine wash on a gentle/wool cycle in cold water (50-68°F). Use a mild wool-safe or pH-neutral detergent. Wash with similar colors. Don't bleach or use fabric softener.
Reshape while damp and lay flat to dry. Don't tumble dry, twist, or wring. Cool iron if needed. Store folded in a cool, dry space with airflow; avoid hanging.
Naturally dyed colors can transfer with sweat or friction. Wear them with dark clothing or equipment, wash sparingly, and avoid citric acid, which can lighten the color.
US orders over $200 ship free. Estimated US delivery is 7 to 10 business days, including preparation and transit. You'll receive a tracking number by email once your order ships. International rates are calculated at checkout; estimated delivery is 10 to 20 business days. Customs duties and import taxes are your responsibility.
For hygienic reasons, all underwear and intimate apparel (including boxers, panties, thongs, and bras) is final sale and cannot be returned or refunded.
The benefits
Alpacas evolved where days run warm and nights turn cold. Their semi-hollow fibers trap insulating air, helping you stay comfortable as the temperature changes.
Alpaca’s smoother scales give the fabric a soft feel against your skin. Comfort comes from the fiber’s structure.
Alpaca wool brings breathable comfort to your first layer. Wash intimate apparel after wear to keep it clean; natural odor resistance doesn't replace regular care.
Single origin
Arms of Andes is a family company with roots in the Peruvian Andes. “Arms” brings together the initials of four siblings. That connection to Peru shapes what we make and where we make it.
From fiber sourcing and yarn spinning to knitting and sewing, production stays in Peru. One country, with the people and knowledge behind your gear close together.
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