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BottleBlend™ vs Naturals - what’s the difference?Updated 2 months ago

Both BottleBlend™ and Naturals are premium, sustainable fabrics - each with its own personality and feel.

BottleBlend™ - Durable, Lightweight Comfort

  • Made from recycled plastic bottles (certified post-consumer waste).

  • Lightweight, breathable pin-hole construction that’s quick drying and comfortable all day.

  • Smooth to touch, super soft against skin, and built to move with you.

  • Used across all Undie Club designs and many Shop collections.

Tip: Think of BottleBlend™ as your go-to for all-day comfort when you’re on the go.

Naturals (TENCEL™ Modal) - Soft, Sustainable Luxury


  • Made from TENCEL™ Modal fibres, derived from renewable wood sources.

  • Produced in a closed-loop system, recycling 99% of water and solvents.

  • Ultra-soft, breathable, and gentle on skin — ideal for lounging or relaxing days.

  • Featured in both Undie Club and Special Edition collections.

Tip: Think of Naturals as your go-to for softness, comfort, and everyday luxury.




See also: Care instructions • Can I work out or swim in them?

We use two sustainable fabric families that each bring their own kind of comfort. Both are designed to make you feel ridiculously good, just in slightly different ways.

BottleBlend™ — Performance You Can Feel Good About

  • Made from up to four recycled ocean-bound plastic bottles per pair.
  • Lightweight, breathable, and moisture-wicking.
  • Anti-odour and anti-chafe — perfect for active days, workouts, or hot climates.
  • Our signature fabric, used across most of The Undie Club collections.

Tip: Think of BottleBlend as your go-to for all-day freshness and confidence.


Quick Comparison

Feature

BottleBlend™

Naturals

Material

Recycled plastic bottles

TENCEL™ Modal wood fibres

Texture

Lightweight & breathable

Ultra-soft & smooth

Best for

Workdays, workouts, staying fresh

Rest days, lounging, self-care

Sustainability

Recycled plastic

Renewable wood fibres

Availability

Most collections

Exclusive to Undie Club & some special editions 


Together, they’re the yin and yang of comfort - BottleBlend for performance, Naturals for everyday supersoft comfort.

See also: How should I care for my Knobby Undies Can I work out or swim in my Knobbys?

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