What 'Bamboo' Means on a Pillow Label: Viscose, Rayon & Blends
Many bedding covers are marketed simply as "bamboo," but under US textile labeling rules, soft fabrics made from bamboo pulp are regenerated cellulosic fibers—most commonly viscose (or rayon) derived from bamboo.
How Regenerated Bamboo Viscose/Rayon and Lyocell Are Made
1. Viscose / Rayon from Bamboo
Woody bamboo cellulose is dissolved and spun into soft regenerated viscose/rayon filaments. In Coop Sleep Goods' Lulltra fabric (Coop Original, Coop Eden), the cover is a knit blend of 60% polyester and 40% bamboo-derived viscose rayon, pairing the softness and moisture absorption of viscose with the durability of polyester.
2. TENCEL / Eucalyptus Lyocell
Lyocell is a third-generation cellulosic fiber spun from wood or eucalyptus pulp in a closed-loop solvent process. In Buffy Breeze Pillowcases (100% eucalyptus lyocell) and the Brooklyn Bedding Talalay Latex Pillow cover, lyocell provides smooth drape and high moisture-vapor transport.
3. Why Exact Fiber Percentages Matter
Always check whether a "bamboo" cover is 100% rayon/viscose, a 60% polyester / 40% viscose blend, or backed with a polyurethane waterproof membrane (Coop Ultra-Tech Protector). Each blend washes and breathes differently.
| Model & Size | Sleep Position Fit | Dimensions & Loft | Fixed vs. Adjustable | Fill Material | Cover Composition | Cooling Mechanism | Washing & Care | Details & Retail |
|---|---|---|---|---|---|---|---|---|
| Coop Original Adjustable Coop Sleep Goods · Queen Classic (SKU LH-HLN1-8MML) |
Side, Back, Stomach | 19 in x 29 in Classic knife-edge profile; user-adjustable loft | Fully adjustable fill via interlocking dual-case zipper system; includes extra 1/2 lb fill bag | Proprietary blend of medium-firm cross-cut virgin memory foam and polyester microfiber | Lulltra knit outer pillowcase (60% polyester, 40% bamboo-derived viscose rayon); 100% polyester inner liner | Airflow between loose cross-cut foam pieces and microfiber clusters paired with a breathable viscose-from-bamboo/polyester knit cover | Machine washable removable Lulltra cover and washable inner pillow (cold water, gentle cycle, tumble dry low) | Full Specs |
| Coop Eden Adjustable Coop Sleep Goods · Queen Classic (SKU CHG-ADJGMF-QN; 4082 g shipping weight) |
Side, Back, Stomach | 17 in x 27 in with 2 in mesh-tape gusset; user-adjustable loft | Fully adjustable fill via zippered inner liner; includes 1/2 lb bag of extra fill | Proprietary blend of cooling gel-bead-infused memory foam and microfiber fill | Lulltra knit cover (60% polyester, 40% bamboo-derived viscose rayon) with 2-inch mesh-tape gusset; 100% polyester inner liner | Gel-bead-infused shredded foam + microfiber blend that promotes interstitial airflow, paired with a 2-inch breathable mesh gusset | Lulltra outer cover is machine washable in cold water on gentle cycle (tumble dry low) | Full Specs |
| Buffy Breeze Pillowcases Buffy · Standard Set of 2 (SKU BDSPC-QN-01) |
Side, Back, Stomach | 20 in x 29 in Standard envelope/slip-on fit (King 20 in x 36 in also manufactured) | Accessory pillowcase set (fits Standard and Queen pillows) | Unfilled woven pillowcase set | 100% TENCEL eucalyptus lyocell woven in a smooth 300-thread-count sateen weave | Moisture-absorbent, breathable 100% eucalyptus lyocell fibers that release humidity faster than heavy cotton weaves | Machine wash cold on gentle cycle; tumble dry low | Full Specs |
| Coop Ultra-Tech Protector (Queen) Coop Sleep Goods · Queen Classic (SKU FNSKU-CHG-PP-QN; 454 g) |
Side, Back, Stomach | Fits Standard and Queen pillows up to 19 in x 29 in | Zippered protective barrier worn underneath a standard pillowcase | Unfilled dual-surface protective encasement | Top/Bottom: polyester and bamboo-derived viscose rayon blend backed with a quiet polyurethane waterproof membrane; Gusset: unbacked breathable polyester/rayon from bamboo mesh | Air-permeable unbacked side gusset allows air to enter and exit the pillow when compressed while keeping the top/bottom waterproof | Unzip with waterproof backing facing inward; machine wash cold on gentle cycle with mild detergent (no bleach or softener); tumble dry low | Full Specs |
Frequently Asked Questions
Why do manufacturers blend polyester with bamboo-derived viscose rayon?
Pure viscose rayon can stretch or weaken when wet during laundering; blending 60% polyester with 40% bamboo-derived viscose rayon increases tensile strength and helps zippered pillow covers hold their shape through repeated washes.