Alpaca underwear is underwear made with alpaca fiber, often blended with other materials. At Alti, we put Royal Alpaca at the heart of our approach to softness. Our Royal Boxer Brief combines it with TENCEL™ in a 100% plastic-free body fabric, then adds the practical details you want from an everyday pair.
Here is what to know about the materials, fit, and care before choosing your first pair.
Why we chose Royal Alpaca
Underwear sits against your skin for much of the day. We chose Royal Alpaca for the soft feel we want from that first layer, whether you are getting dressed for work or taking the weekend slowly.
Fiber fineness helps explain why selection matters. Diameter is measured in microns, with smaller numbers describing finer fibers. Research on alpaca fleece links prickliness to fiber thickness and internal structure. That makes the quality of the selected fiber relevant to clothing worn close to the skin.
The finished fabric matters, too. Yarn, knit, and the other fibers in a blend all help shape what you actually feel when you put on a pair.
Inside our plastic-free body fabric
Our body fabric combines 15% Royal Alpaca and 85% TENCEL™. It pairs an animal fiber with a wood-derived cellulosic fiber, with no polyester, nylon, or elastane in that blend.
TENCEL™ is a cellulosic fibers. These fibers begin with cellulose from wood, which is processed into textile fibers. Lenzing's fiber overview explains their origins.
That means our alpaca underwear is a blend. Royal Alpaca and TENCEL™ both form part of the material you wear. We disclose the percentages so you can see exactly what makes up the main fabric.
The phrase 100% plastic-free body fabric describes that Royal Alpaca and TENCEL™ blend specifically. The body fabric, pouch, and waistband are distinct parts of underwear, each with a role in the finished design.
How our Royal Boxer Brief is built
Our Royal Boxer Brief is made in Peru, with a 5.3-inch inseam. It brings the material into a familiar boxer brief shape designed for your daily rotation.
A few details are worth looking at when comparing it with the pairs you already wear:
- Leg length. The inseam is measured along the inside of the leg. Compare it with a pair you like to get a clearer sense of the coverage.
- Pouch design. Our Sanctuary Pouch™ is part of the design's focus on support. Consider the amount of room you prefer when choosing your fit.
- Everyday finish. A functional vertical fly adds convenience, while a tagless interior keeps a separate sewn-in tag out of the garment.
Start with your measurements and our size chart. The size printed on an existing pair can be a reference, but checking the chart gives you a more useful basis for choosing across brands.
Caring for your first pair
Our care guidance calls for a cold, gentle wash with similar colors. Skip bleach and fabric softener, then lay flat to dry or tumble dry on low. Follow the care label supplied with your pair.
Check those instructions before adding a new fabric to your drawer. If you usually put everything through a hot wash and high dryer setting, set this pair aside for the gentler routine it calls for. An easy laundry habit is to keep items with similar care instructions together.
Choosing alpaca underwear for everyday wear
Start with what matters to you: the feel of the fabric, its composition, and the fit you enjoy. Our approach brings Royal Alpaca into a clearly disclosed blend, with a practical cut and straightforward care instructions.
If softness and plastic-free body fabric are priorities for your next pair, explore our Royal Boxer Brief.
