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DIY mug cozy

This project utilizes scraps or upcycled fabrics to create a functional and extremely durable insulated mug cover. At -20 Celsius the cozy will keep a mug of coffee warm for about 30 minutes. The cut list dimensions below are for the pictured mug. The mug can also serve as a backup or primary pot for boiling water.

Finished cozy for a 450 ml titanium cup
Tea bags, instant coffees, and two instant soups fit easily inside the mug for storage.
Mug and drinks loaded into the top of a frame bag.
Dangle-free zone. 🙂
Sew one edge of the two panels together. Liner fabric on top.
Positioning handle webbing at centre of panels, to create a hidden seam.
Attaching insulation to both edges of panel.
All components assembled.
Reverse side with bar tack of handle visible at upper centre
Inside fabric of cozy after turning the panels finished side out.
Outside fabric of cozy. The edge seams are now hidden.
Initial closure seam.
Second closure seam carefully matched to circumference of the mug.
Finished cozy with the handle bar tacked in four locations. The 3/4″ webbing handle covers the closure seam.


ComponentQuantityLength (in)Width (in)
EcoPak – EPX 2001123.5
Hyper D 3001123.5
Climashield APEX 3.6oz1113.5
3/4″ heavy webbing for handle1120.75
Cut list for pictured mug. Adjust sizing as required, leaving enough distance between the cozy and edge of the mug to avoid contact between lips and cozy.

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