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UltraLyte™

Say hello to UltraLyte™, our lightest fabric to date. We've remade our four best-selling knickers in a silky-soft, seamfree bamboo fabric that's so light, you'll hardly notice it's there.

 

Made from 89% viscose made from bamboo and 11% elastane, with no nylon in the main fabric (only in the trims), UltraLyte™ offers superior stretch and an airy fit that moves with you. Each pair features a soft gusset made from a blend of viscose made from bamboo and Australian cotton. It's lightweight underwear for women, ready for warm days, holidays and everything in between.

The Lightest of Ultra Light Underwear

UltraLyte™ is made for the days you want to feel like you're wearing nothing at all. The breathable fabric is moisture-wicking and temperature-regulating, helping you stay comfortable when the weather warms up, and odour-resistant so you feel fresh all day long.

 

If our Bamboo Seamfree knickers are already a favourite, UltraLyte™ is their lighter, silkier sibling: the same seamfree comfort, with added stretch and a barely-there feel. It's also OEKO-TEX® certified and made without PFAS, so it's gentle on skin from the very first wear.

Shop Lightweight Underwear for Women in Our Best-Selling Styles

Every UltraLyte™ style is an exact replica of a Boody best-seller, so you'll already know the fit. Pick our No. 1 best-selling Full Briefs for a high rise and full coverage, or the mid-rise Midi Briefs for full bum coverage without the high waist. For less fabric, the low-rise Classic Bikini offers moderate coverage, while the minimal-coverage G-String is designed to minimise visible knicker lines under clothing.

 

Not sure of your size? Check our Size Guide, or browse more everyday styles in our full range of women's underwear.


SHOPPING MADE RELATABLE

SHOPPING MADE RELATABLE

Boody is committed to making your shopping journey as comfortable as our products.

From your feedback, we know it helps to see our pieces on someone who represents your shape and size. That’s why we’ve made it easier to shop for a more diverse range of body types. This isn’t a stock filter - it’s about visuals. We’ll display models across Small, Mid, and Plus size groupings, and you can always select non-model images too.

A style may still be available in your size, even if we haven’t yet photographed it in your selected size, so we recommend checking the product detail page or using our size filter to be sure.

It’s not perfect yet, but we’re listening to and learning from our community, and are committed to investing in more diversity in model shapes and sizes.

Small

Small

Represents sizes from XS through to S. Equivalent to standard AU 6 through to 10

Medium

Medium

Represents sizes from M through to XL. Equivalent to standard AU 12 through to 16

Plus

Plus

Represents sizes from 2XL through to 4XL. Equivalent to standard AU 18 through to 22

Frequently Asked Questions

Ultra light underwear is made from lightweight, breathable fabrics designed to feel barely there against your skin. Boody's UltraLyte™ Underwear is our lightest underwear fabric yet, combining innovative bamboo filament technology with a silky-soft feel, superior stretch and seamfree comfort. Made for everyday wear, UltraLyte™ offers a smooth, airy fit that moves comfortably with your body.

Boody UltraLyte™ Underwear is made from 89% viscose derived from bamboo and 11% elastane. This includes 38% innovative bamboo filament, which replaces traditional nylon in the main fabric to create a lightweight yet strong material with superior stretch. The gusset is made from 63% bamboo viscose, 29% Australian cotton and 8% elastane. UltraLyte™ is also OEKO-TEX® STANDARD 100 certified.

Both UltraLyte™ and Boody's original Bamboo Seamfree underwear offer soft, stretchy comfort, but they differ in fabric weight and feel. UltraLyte™ is Boody's lightest fabric yet, featuring innovative bamboo filament technology for a silky-soft, airy feel and superior stretch. Bamboo Seamfree is 79% viscose made from bamboo, 15% nylon and 6% elastane, while UltraLyte™ replaces nylon in the main fabric with bamboo filament for a lighter, stretchier feel. Choose UltraLyte™ for a barely-there feel, or Bamboo Seamfree for the familiar fit of our original fabric.

UltraLyte™ and Lyolyte® are both lightweight underwear collections from Boody, but they use different fabrics and construction techniques. UltraLyte™ features innovative bamboo filament technology and seamfree construction, delivering superior stretch and a silky-soft, barely-there feel. Lyolyte® is made using bamboo lyocell fabric, known for its lightweight, breathable feel and soft, smooth finish. Both are designed for everyday comfort, with UltraLyte™ offering the lighter, stretchier feel of the two.

Yes, lightweight underwear is a great choice for hot weather, everyday wear and holidays. Breathable fabrics can help improve comfort in warmer conditions, while lightweight designs feel less bulky under clothing. Boody UltraLyte™ Underwear combines breathable bamboo viscose with a lightweight, moisture-wicking fabric that’s also temperature-regulating and odour-resistant, making it a practical option for warm weather, packing light and wearing on the go.

Each UltraLyte™ style is an exact replica of one of Boody’s best-selling knicker shapes, with a lighter, stretchier fabric. Its innovative seamfree construction and bamboo filament fabric offer superior stretch, allowing the underwear to move comfortably with your body. While UltraLyte™ shares the comfortable fit of Boody's original underwear, the lighter fabric may feel different against your skin. Check our size guide to find your best fit.

Boody UltraLyte™ Underwear is available in sizes XS to XL, offering a soft, stretchy fit designed for everyday comfort. Made with innovative seamfree technology and superior stretch, UltraLyte™ moves comfortably with your body for a lightweight, barely-there feel. For the best fit, refer to our size guide.

To keep your Boody UltraLyte™ Underwear feeling soft and comfortable, machine wash cold with similar shades on a gentle cycle. Do not bleach, tumble dry, iron or dry clean. Line dry in the shade to help maintain the fabric's softness, stretch and shape, so you can enjoy lightweight, seamfree comfort wash after wash.