Cascade Designs · Waterproof Outdoor Gear Storage Bags
Cascade Designs Discovery Dry Bag 20L
Dry bags typically use water-repellent coating; coating unspecified by brand.
Cascade Designs Discovery bags are waterproofed using an unknown coating. Standard dry bag production often involves water-repellent coating treatments containing PFAS, but this brand shares no material details or PFAS statements.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
PVC or polymer fabric with waterproof coating, unspecified
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
You may also be interested in
Top-graded picks in the categories readers replace first, every one scored on the same rubric.
- polypropylene filter housing, carbon/sediment cartridge
- We found no PFAS statement from the brand
- Bacterial growth in spent cartridges
3 hazards checked on this product, all on its full breakdown.
Aquasure
Premier Series 75 GPD Under Sink Reverse Osmosis Water Filtration System
- RO membrane, carbon filters, stainless steel housing
- We found no PFAS statement from the brand
- Bacterial and microbial growth in housing and filters
4 hazards checked on this product, all on its full breakdown.
Avocado
Vegan Mattress
- organic cotton, natural latex, coconut coir, recycled steel coils
- The brand calls it PFAS-free, which we have not verified
- Heavy metals
2 hazards checked on this product, all on its full breakdown.
What Cascade Designs Discovery Dry Bag 20L is made of, ingredients and materials
The Discovery 20L is constructed from PVC or unspecified polymer fabric with a waterproof coating of undisclosed chemistry. Cascade Designs does not publicly specify whether the water-repellent coating (water-repellent coating) coating uses fluorinated compounds or alternative chemistries. PVC itself poses minimal acute hazard in dry-bag form, but the coating composition is the critical unknown for long-term degradation and leaching potential, especially if the bag contacts food or prolonged skin contact occurs.
What’s concerning
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.
PFAS
No independent testing of this specific model is on record. Industry standard for budget PVC dry bags is fluorinated water repellent; brand silence on coating chemistry suggests conventional chemistry, not PFAS-free alternative. Leaching risk is low in dry storage but increases if bag contacts food or prolonged moisture.
Source, ATSDR ↗PVC polymer degradation and plasticizer leaching
PVC-based fabrics may contain phthalate plasticizers to maintain flexibility. Degradation accelerates with heat, UV, or prolonged moisture exposure. Risk is minimal for occasional use but increases over years of storage in warm environments or frequent washing.
Coating off-gassing and VOC release
Waterproof polymer coatings on budget dry bags may release volatile organic compounds, particularly when new or stored in warm conditions. Off-gassing odor is common but health impact from brief exposure is low; ensure adequate ventilation when first opened or stored in enclosed spaces.
Microplastic shedding from coating wear
As the waterproof coating degrades over years of use and abrasion, small polymer particles may flake into contact with contents or the environment. This is a known concern for coated textiles but risk is low if the bag is inspected regularly and replaced before heavy degradation occurs.
What’s reassuring
Heavy metals
No recalls or testing of Cascade Mountain Tech dry bags for lead, cadmium, or other heavy metals in fabric dyes have been documented. Standard fabric dyes in consumer outdoor gear are regulated under CPSIA for children's products but not systematically tested for adult gear; risk is low but unverified.
Source, FDA ↗How is this PFAS grade calculated?
The brand's record and disclosure
Cascade Designs (parent company of Cascade Mountain Tech) has not issued public statements on PFAS use in dry bags or other products. The brand does not advertise PFAS-free certifications or environmental coatings on this model. No recalls or regulatory actions specific to this product line are on public record. The lack of transparency on coating chemistry is typical for budget outdoor gear but limits informed purchasing.
How it compares in its category
Budget dry bags in this price range typically use fluorinated water-repellent coating coatings (PFOA, GenX, or Teflon-type coating variants) to achieve water repellency; fluorine-free alternatives exist but command higher prices. The Discovery 20L sits at the cost-conscious end of the spectrum, suggesting conventional coating technology. Premium competitors (e.g., Patagonia) publish coating material disclosures; this product does not, placing it below transparency standards in the outdoor-gear category.
If you buy it
Avoid filling the bag with food or items for prolonged skin contact; use it primarily for camping gear, electronics, or clothing. Do not machine wash or expose to high heat (drying directly in sun or near heat sources risks coating degradation). Inspect seams and coating annually for tears or flaking; replace if the waterproof layer visibly degrades. Store dry and uncompressed to extend coating life and reduce off-gassing of volatile compounds from the polymer base.
What is not known about PFAS in this product?
- Basis
- Model estimate, 42% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Cascade Designs has made none
Formulations change between production runs, so check the current label. How we grade.
What are the PFAS-free alternatives to Cascade Designs Discovery Dry Bag 20L?
- Polypropylene storage bin, no water-resistant coating mentioned
- UV degradation and additive leaching
3 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- Nylon, polyester, cotton blend; details unspecified
- Volatile organic compounds (VOCs) from polyester and nylon manufacturing
5 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- Recycled polyester with water-repellent coating (water-repellent coating) finish
- The brand calls it PFAS-free, which we have not verified
- PFAS
4 hazards checked on this product, all on its full breakdown.
Find an alternative on AmazonMore waterproof outdoor gear storage bags grades
How we score, every product runs through the same public 0-100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.