By purchasing yarn from String Theory, you’re lifting up a number of small and female-owned businesses. We help women in Rwanda, who survived the genocide, educate a new generation. We help women in Uruguay find meaningful work without leaving their rural homes. We help a family in New Hampshire maintain a mill, a tradition spanning hundreds of years. We help restore the Patagonia Grasslands by encouraging sustainable farming.Every yarn we stock makes a positive impact.

Hot Water Bottle & Cover
$75.00
Warm and cozy, these beautifully soft, merino lambswool hot water bottle cover sets will keep you snug till morning. Hand made in London.
- Luxurious but practical knitted hot water bottle cover
- Pure merino lambswool for natural insulation
- Gently felted for extra softness, durability and premium finish.
- Perfect for soothing aches & pains.
Each set includes a 2L hot water bottle and lambswool cover.