Is Sea to Summit PFAS-free?
Across 30 graded products, Sea to Summit averages F (27/100). On disclosure, the brand says nothing publicly about PFAS. None of its products grade C or better yet. Grades are model-based estimates, not lab results.
Graded and flagged D and F, we’d swap these
Sea to Summit
Ultra- Sil Stuff Sack Set
Ultra-Sil nylon fabric, no water treatment applied
Stuff sack with no waterproofing treatment.
⚠Risky category by default
Sea to Summit
Ultra-Sil Pack Cover
nylon with silicone water-repellent coating
PFC-free claim stated. No independent verification available yet.
⚠Waterproof or stain-proof treatment
Sea to Summit
TPU Guide Waterproof Case
TPU (thermoplastic polyurethane) with waterproof treatment
TPU waterproof case, treatment composition undisclosed.
⚠Waterproof or stain-proof treatment
Sea to Summit
Guide Waterproof Case
Waterproof case with unspecified water-repellent coating
Skip. Waterproof coating type undisclosed, PFAS risk unclear.
⚠Waterproof or stain-proof treatment
Sea to Summit
TPU Guide Waterproof Case for iPhone Black 358BK
TPU (thermoplastic polyurethane) with waterproof coating
Waterproof case with unspecified coating; PFAS risk unclear without disclosure.
⚠Waterproof or stain-proof treatment
Sea to Summit
TPU Guide Waterproof iPhone 5 Case Blue 358BL
TPU (thermoplastic polyurethane) with waterproof coating
TPU waterproof cases often use PFAS coatings; Sea to Summit discloses nothing.
⚠Waterproof or stain-proof treatment
Sea to Summit
TPU Guide Waterproof Case for iPhone 5
TPU (thermoplastic polyurethane) with waterproof coating
Waterproof TPU case, coating composition unclear, PFAS unknown
⚠Waterproof or stain-proof treatment
Sea to Summit
TPU Guide Waterproof Smartphone Case Large
TPU (thermoplastic polyurethane) with waterproof coating
TPU itself lower concern, but waterproof treatment unknown.
⚠Waterproof or stain-proof treatment
Sea to Summit
Outdoor Products SmartPhone Watertight Phone Case
Plastic case with waterproof sealing treatment
Skip until brand discloses waterproof treatment chemistry.
⚠Waterproof or stain-proof treatment
Sea to Summit
Big River Dry Backpack
Ripstop nylon with unspecified water-repellent coating (water-repellent coating) coating
Skip until Sea to Summit discloses water-repellent coating chemistry; dry bags often use PFAS-based water repellents.
⚠Waterproof or stain-proof treatment
Sea to Summit
Ultra-Sil Daypack
Ripstop nylon with unspecified water-resistant coating
Skip unless Sea to Summit discloses coating chemistry; water-repellent coating-treated nylon carries moderate PFAS risk.
⚠Waterproof or stain-proof treatment
Sea to Summit
ULTRA SIL DAY PACK
Ripstop nylon with water-repellent coating
Silent on PFAS; water-repellent coating-treated packs commonly use fluorinated compounds, skip or contact brand.
⚠Waterproof or stain-proof treatment
Sea to Summit
Ultra- Sil Dry Day Pack
Silnylon (nylon ripstop with silicone coating)
Moderate concern, silicone-coated nylon typically avoids PFAS, but Sea to Summit provides no public disclosure.
⚠Waterproof or stain-proof treatment
Sea to Summit
Hydraulic Pro Dry Pack
Nylon/polyester fabric with proprietary waterproof coating
Skip until brand discloses coating chemistry or provides PFAS-free verification.
⚠Waterproof or stain-proof treatment
Sea to Summit
Ultra- Sil Dry Daypack
Ripstop nylon with water-repellent coating (water-repellent coating) treatment
Skip until brand discloses water-repellent coating chemistry, waterproof daypacks commonly use PFAS.
⚠Waterproof or stain-proof treatment
Sea to Summit
Big River Dry Bag
PVC/vinyl laminate with water-repellent coating (water-repellent coating) coating
Skip or contact Sea to Summit directly about water-repellent coating chemistry, waterproof bags often use PFAS coatings.
⚠Waterproof or stain-proof treatment
Sea to Summit
Spark Down Sleeping Bag
Down insulation with water-repellent coating-treated nylon shell
Skip until Sea to Summit discloses water-repellent coating chemistry, down jackets are common PFAS vectors.
⚠Waterproof or stain-proof treatment
Sea to Summit
Trek Down Sleeping Bag
Down insulation with synthetic water-repellent coating-treated nylon shell
Silent on PFAS; down + water-repellent coating treatment suggests potential exposure, contact Sea to Summit for transparency.
⚠Waterproof or stain-proof treatment
Sea to Summit
Trek Women's Down Sleeping Bag
Down insulation with nylon outer; water-resistant shell coating (type unspecified)
Down core is PFAS-lower risk, but shell water-resistance treatment remains unidentified, request disclosure from Sea to Summit.
⚠Waterproof or stain-proof treatment
Sea to Summit
Boab Synthetic Sleeping Bag
Polyester synthetic shell with water-repellent coating water-repellent treatment
Skip until Sea to Summit clarifies water-repellent coating chemistry; synthetic sleeping bags commonly use PFAS-based water repellents.
⚠Waterproof or stain-proof treatment
Sea to Summit
Traveller Down Sleeping Bag
Down insulation with synthetic shell, likely water-repellent coating-coated polyester
Skip until Sea to Summit discloses water-repellent coating chemistry, down sleeping bags typically use PFAS-based water repellents.
⚠Waterproof or stain-proof treatment
Sea to Summit
Alpine Down Sleeping Bag
Down fill + nylon shell with water-repellent coating treatment
Moderate caution: down is inherently lower-risk, but water-repellent coating shell coating is likely PFAS-treated and brand won't disclose.
⚠Waterproof or stain-proof treatment
Sea to Summit
Ascent Down Sleeping Bag
down insulation + nylon shell with water-repellent coating treatment
Moderate concern due to water-repellent coating; no transparency from brand on PFAS use.
⚠Waterproof or stain-proof treatment
Sea to Summit
Spark Down Sleeping Bag
Down insulation with synthetic outer shell; likely water-repellent coating-treated nylon or polyester
Skip without explicit PFAS-free confirmation; down sleeping bags commonly use water-repellent coating coatings that may contain PFAS.
⚠Waterproof or stain-proof treatment
Sea to Summit
Lightweight Dry Bag Set
Nylon fabric with water-repellent coating waterproof coating
Dry bags use water-repellent coating coatings; PFAS content unclear, brand silent.
⚠Waterproof or stain-proof treatment
Sea to Summit
Ultra- Sil Dry Bag
Silicone-based coated nylon or polyester fabric
Dry bags likely use silicone coatings, but PFAS status unclear from brand.
⚠Waterproof or stain-proof treatment
Sea to Summit
Ultra- Sil Dry Bag Set
Ultra-Sil coated nylon fabric, unspecified water-repellent coating
Dry bag with mystery waterproof coating, no PFAS disclosure.
⚠Waterproof or stain-proof treatment
Sea to Summit
TPU Accessory Case
TPU (thermoplastic polyurethane) with waterproof treatment
TPU case has waterproof coating; PFAS content in treatment unconfirmed by brand.
⚠Waterproof or stain-proof treatment
Sea to Summit
Quest Outdoors Dry Bag Sling
Nylon/polyester with water-repellent coating waterproof treatment
Dry bags typically use water-repellent coating coatings; Sea to Summit does not disclose PFAS status.
⚠Waterproof or stain-proof treatment
Sea to Summit
Lightweight Dry Bag View 8L Surf Blue
PVC-free synthetic fabric with waterproof coating
Waterproof coating chemistry unconfirmed.
⚠Waterproof or stain-proof treatment
Every grade uses the same public rubric. How grades work →