Sea to Summit Lightweight Dry Bag

Category baseline

The starting point for this type of product, before anything specific to this product is counted.

No PFAS disclosure

No public statement from the brand about PFAS in this product.

Waterproof / stain-resistant treatment

Water-repellent coating treatments have historically used PFAS.

water-repellent coating degradation and leaching

As the nylon water-repellent coating wears through repeated use and washing, residual coating chemicals and breakdown products may leach from fabric fibers, particularly when wet. Risk increases with age and UV exposure; heavily used bags show visible coating failure within 2-3 years.

Azo dyes in colored fabric

If the dry bag uses synthetic dyes (common for nylon), azo dyes are a potential concern; however, most modern gear manufacturers use compliant dye formulations. The risk is low unless the bag shows unusual dye transfer when wet or rubbed. Sea to Summit products are not flagged in public safety databases for dye issues.

Microplastic shedding from synthetic fabric

Nylon sheds microfibers during use and washing, particularly from abraded seams and high-friction areas. Dry bags are not typically heated, which limits microplastic release compared to laundry, but shedding during storage, packing, and unpacking is inevitable; environmental impact occurs primarily through washing.

Formaldehyde / VOCs

Nylon itself does not typically contain formaldehyde resins (these are more common in cotton blends and wrinkle-resistant treatments), but finishing processes may introduce trace amounts. No specific issues documented for Sea to Summit nylon bags.

Antimony in polyester components (seams/straps)

Sea to Summit Lightweight Dry Bags use nylon as the primary material; polyester is not listed as a primary component. If reinforcement seams or handles include polyester thread, antimony (used as a polymerization catalyst) is theoretically present but at negligible levels in consumer products.