# item.guide
Side-by-Side Comparison Trims & Care

Fabric Weight vs. Laundry Symbols

Comparing 2 standards across 12 specifications. 12 key differences identified.

Comparing:
Fabric Weight
Laundry Symbols

Fabric weight in Grams per Square Meter (GSM / g/m²) and imperial Ounces per Square Yard (oz/yd²) quantifies textile aerial mass under ASTM D3776. Combined with ISO 1144 linear yarn density in Denier and Tex, fabric weight benchmarks dictate garment drape, breathability, and durability.

View full Fabric Weight spec sheet →

International garment care symbols governed by ISO 3758 (GINETEX) and ASTM D5489 standardize washing, bleaching, drying, ironing, and professional cleaning instructions on garment tags. The system uses five core geometric shapes modified by temperature dots, cycle bars, and cross-out warnings.

View full Laundry Symbols spec sheet →

Specification Comparison Table

12 Parameters
Parameter / Spec
Governing Standards
ASTM D3776 (GSM) / ISO 3801 / ISO 1144 (Denier/Tex) ISO 3758 / GINETEX / ASTM D5489 / FTC Care Labeling Rule
GSM to oz/yd² Conversion
1 oz/yd² = 33.906 g/m² | GSM = oz/yd² × 33.906 | oz/yd² = GSM ÷ 33.906
Denier to Tex Conversion
Tex = Denier ÷ 9 | Denier = Tex × 9
Lightweight Apparel
<150 GSM (<4.4 oz) | Silk, chiffon, summer t-shirts (130–150 GSM)
Mediumweight Apparel
150–250 GSM (4.4–7.4 oz) | Heavy t-shirts (180–220 GSM), dress shirts, chinos
Heavyweight Apparel
250–350 GSM (7.4–10.3 oz) | Cotton hoodies (300–400 GSM), flannel, fleece
Extra Heavy / Technical
>350 GSM (>10.3 oz) | Raw selvedge denim (12–16 oz), duck canvas (10–18 oz)
The 5 Core Symbols
Washtub (Washing) | Triangle (Bleach) | Square (Drying) | Iron (Ironing) | Circle (Dry Clean)
Temperature Dots Rule
1 Dot = Low (30°C/110°C) | 2 Dots = Med (40°C/150°C) | 3 Dots = High (50°C/200°C)
Mechanical Action Bars
No bar = Normal cycle | 1 Bar = Permanent Press/Synthetic | 2 Bars = Gentle/Wool
Hand in Tub Symbol
Hand wash only (maximum 40°C / 105°F, no machine agitation)
Cross-Out 'X' Modifier
Never perform the indicated operation (e.g., Do Not Tumble Dry, Do Not Iron)