Thunderpants (fun cotton undies for all sizes)

Thunderpants is a slightly bonkers company (for people who love bright patterned undies!) that offers UK-stitched and finished undies, made locally to cut transport miles and support local economies.

The wide waistbands and flat seams prevent digging or chafing, and they hold up after each wash. You’ll also find matching vests and leggings.

Nearly all undie brands use a little elastane, so launder in a microfiber filter (this can be used to wash all synthetic fabrics). 

ECOOutfitters (which makes organic school uniforms) offers organic cotton underwear for girls and boys. Including briefs and boxer shorts for girls and boys.

Where to recycle your old undies!

Although new undies can’t be returned to shops (and charity shops don’t want used undies), you can drop old pairs (even torn and worn) in textile banks. Fabrics are shredded into carpet insulation!