weight 4 cotton yarn

100% cotton bedding sets 4 pieces : insider notes, lab data, and real-world use If you’ve ever woken up clammy under a polyester duvet, you already know why cotton keeps winning. Lately, demand for breathable natural fibers is up—driven by hotels returning to crisp percale and home brands betting on long-staple yarns. I’ve been touring mills in Hebei and along the coast; the story is consistent: cleaner cotton, tighter quality control, fewer gimmicks. And yes, that’s good news for sleepers. What’s inside the set The 100% cotton bedding sets 4 pieces typically include: 1 duvet cover, 1 fitted sheet, and 2 pillowcases—cut for Queen/King with deep pockets and 360° elastic on the fitted sheet. Many customers say it feels cool on first touch and softens after the first wash, which tracks with reactive-dyed percale in my experience. Product specs (lab-leaning, but readable) Parameter Spec (≈ real-world) Fiber / Yarn 100% combed cotton, ring-spun, Ne 40s–60s Weave / Thread Count Percale, ≈ 200–300 TC (balanced) Finishing Singeing, desizing, scouring, bleaching, reactive dyeing, sanforized Color fastness (ISO 105-C06) Grade 4–5 to washing; 4 to rubbing (dry) Shrinkage (ISO 5077) ≤ 3% after 3 cycles Mass ≈ 120–145 g/m² (fabric) Service life ≈ 3–5 years household use (50–80 wash cycles), care-dependent From cotton boll to carton: process flow Material selection → combed ring-spun yarn → weaving (percale) → singeing/mercerizing (optional) → desize/scour/bleach → reactive dye/print → sanforize → 4-point inspection → cutting/sewing → needle detection → wash/press → carton packing. Testing: ISO 105-C06 color fastness; ISO 12945-2 pilling (Martindale target Grade 4); ASTM D5035 tensile strength; AATCC 135/ISO 6330 dimensional stability. Certifications commonly requested: OEKO-TEX Standard 100, ISO 9001; GOTS on organic variants. To be honest, not every batch needs the whole alphabet soup—but hospitality buyers ask for it. Application scenarios Hotels and boutique stays: easy turnover, crisp hand, consistent sizing. Short-term rentals: stain-resistant reactive dyes; spares are economical. Family bedrooms and dorms: breathable, machine-washable, no static. Warmer climates or hot sleepers: percale’s cooler surface helps. Commercial terms (straight from the sheet) 100% cotton bedding sets 4 pieces — Delivery: 60 days; Packing: carton; MOQ: 1000 sets; Main Ports: Tianjin / Qingdao / Shanghai; Payment Terms: FOB/CIF. Origin: Room 1503, 15th Floor, Tianli Business Building, No. 34 Guang'an Street, Chang'an District, Shijiazhuang, Hebei. Vendor snapshot (for buyers comparing quotes) Vendor Weave / TC MOQ Lead time Certs Customization Mill A (Hebei) Percale 200–300 TC 1000 sets ≈ 60 days OEKO-TEX, ISO 9001 Colors, piping, logo Mill B (Coastal) Percale/Sateen 220–400 TC 1500 sets 45–70 days OEKO-TEX, BSCI Embroidery, patterns Trader C Percale 180–220 TC 500 sets 30–50 days On request Packaging, labeling Customization and QC Options: embroidery, contrast piping, custom GSM, branded cartons, EU/US sizing, zipper or button closures. QC uses the 4-point fabric inspection, seam-strength pull tests, needle detection, and pre-shipment AQL 2.5 (typical). Honestly, this is where good mills quietly outshine the rest. Mini case notes Qingdao boutique (120 rooms): switched to 100% cotton bedding sets 4 pieces ; reported 18% fewer guest heat-complaints over summer. EU DTC brand: reactive-dyed percale; return rate dropped from 7.9% to 5.8% after resizing the fitted sheet pocket depth by +2 cm. Care tips (to keep it crisp) Machine wash warm with mild detergent; avoid optical brighteners on darks; tumble low; remove promptly; light iron if you must. Real-world use may vary, but these habits protect strength and color. Citations ISO 105-C06: Tests for colour fastness to domestic laundering – https://www.iso.org/standard/55836.html ISO 12945-2: Determination of fabric propensity to pilling – https://www.iso.org/standard/42704.html AATCC 135 / ISO 6330: Dimensional changes in home laundering – https://www.aatcc.org/ OEKO-TEX Standard 100: Human-ecological safety of textiles – https://www.oeko-tex.com/