Microplastics
Score impact 0 points
Wool is recorded as Natural Fiber with no listed microplastic polymer, so it does not add a microplastic-source penalty.
Natural Fiber
Wool clothing: health and sustainability score
Natural fiber from sheep with excellent insulation properties. Biodegradable and renewable, but environmental impact varies significantly based on farming practices and animal welfare standards.
Score drivers
Greener Closet scores materials from several penalty inputs. The same material can be reasonable in one product and weak in another, but these are the default drivers behind the base material record.
No default penalty
PFAS uncertainty
Score impact 0 points
MaterialsDB does not apply a base PFAS penalty to Wool. Product-level water, stain, or performance finishes can still change PFAS risk.
Half-life and biodegradability
Score impact 0 points
Wool has no persistence penalty in MaterialsDB, which generally reflects better biodegradability than petroleum-based synthetics.
Fiber shedding
Score impact 0 points
Wool has no default microfiber-shedding penalty in MaterialsDB. Garment construction and laundering still matter.
Manufacturing energy
Score impact 5 points
Wool carries a manufacturing-energy penalty, so production impacts remain part of the score even when microplastic risk is low.
Other fibers to compare
Best next step
Paste the full fabric label into the homepage checker. A 95% cotton, 5% elastane garment will not score the same as 100% cotton, and the checker handles those percentages.
Use the material-label checkerRelated scored products
113 visible scored products include Wool.
Shell Jewel Cut-Out Short Dress
Brand: From Future
97/100
Women'sDressesShorts
Men's Merino Boxers By Woolly | RWS Certified | Soft, Stink Free, Seattle Designed
Brand: Woolly Clothing Co
97/100
Men'sUnderwearShorts
100% Merino Wool Boxer Briefs for Men, Slim Fit Breathable Moisture Wicking Underwear for Hiking, Travel & Everyday
Brand: WooLogic
97/100
Men'sUnderwearShortsActivewear
Scottish Tweed Nep Sweater in Sand
Brand: Pyne & Smith
97/100
Women'sSweaters
Double-Faced Merino Wool Bomber Jacket
Brand: Quince
97/100
Women'sCoats and Jackets
Women's Wool Cruiser Waterproof
Brand: Allbirds
97/100
Women'sShoes
Willow Organic Throw
Brand: Coyuchi
96/100
HomeBlankets
The Natural REM Mattress
Brand: Coyuchi
96/100
HomeMattresses
Category guides where Wool shows up
Wool is on the look-for or watch-out list for these categories. Each guide ranks scored products and explains what the fiber label can tell you.
Common questions
Does Wool clothing shed microplastics?
Wool has no listed microplastic polymer in MaterialsDB. Garment construction and washing can still release fibers.
Is Wool biodegradable?
Wool has no half-life penalty in MaterialsDB, which is a better biodegradability signal than petroleum-based synthetics.
How should I check a Wool blend?
Use the Greener Closet material-label checker with the full percentage label, because blends can change the final score even when Wool is only one part of the garment.