Fabric selection in maternity wear is a far more critical decision than in general apparel — because the same garment has to adapt to a constantly changing body shape over nine months. When buying wholesale, there are three technical criteria worth checking: stretch, recovery, and GSM.
1. Stretch percentage (elastane content)
Maternity wear fabrics typically contain 5-10% elastane (spandex/lycra). The higher this ratio, the more comfortably the fabric stretches, but too much elastane can sometimes give the fabric a "loose" feel. The ideal ratio varies by product type: leggings favor higher elastane content, while dresses call for a balance.
2. Recovery performance — the metric that really makes the difference
Just as important as stretch is the fabric's ability to return to its original shape after stretching — this is called "recovery." A fabric with poor recovery will show permanent deformation at the knees or belly area after just a few washes. This is one of the most common sources of customer complaints and returns.
A practical test for wholesale buyers: stretch a fabric sample by hand and release it; if it doesn't return to its original shape within a few seconds, recovery performance is low.
3. GSM — the right weight for the season
GSM (grams per square meter) determines the fabric's thickness and drape:
- Low GSM (roughly 150-200 g/m²): Summer products, prioritizing breathability.
- Mid GSM (200-280 g/m²): Transitional-season products, everyday use.
- High GSM (280+ g/m²): Winter products, more insulation and warmth.
Before placing a wholesale order, ask your supplier for the GSM of each style; this information matters both for your stock planning and for managing customer expectations.
4. Skin safety and certification
Just as important as fabric quality is whether the fabric contains chemicals harmful to skin. Since skin sensitivity increases during pregnancy and nursing, independent certifications like OEKO-TEX Standard 100 provide concrete assurance here. Always ask for the certificate number.
Summary checklist for wholesale buyers
- Is the elastane ratio appropriate for the product type?
- Does the fabric return to shape after being stretched several times?
- Is the GSM appropriate for your target season?
- Does the fabric have a safety certificate and number?