Matt Parker on Twitter: "For people asking: the Klein Bottle Hat I'm wearing requires some self assembly. Here is the knitting pattern: https://t.co/D6I1IF4Ez8 https://t.co/uHDeBHbaUF" / Twitter
sarah-marie's knitted klein bottles
BRAIN DEAD IN THE BOOK AISLE; KLEIN BOTTLE HAT FINISHED | String-Or-Nothing
Ravelry: Klein Bottle Pi Hat pattern by Judy Parker
Conjoined Möbius Hat pattern by Woolly Thoughts | The Aperiodical
Klein Bottle Hat! | Mad science gift from my thoughtful sist… | conradh | Flickr
sarah-marie's knitted klein bottles
Knitty: Summer 2006
Conjoined Mobius (Klein Bottle) Hat + Elongated Cables : r/knitting
Klein Bottle Hats and Scarves
Klein Bottle Hat Crochet Pattern -
Free Knitting Pattern for Klein Bottle Hat | Easy sweater knitting patterns, Hat knitting patterns, Knitting patterns
Klein Bottle Hat Crochet Pattern -
Klein Bottle Hats and Scarves
Knitty: Summer 2006
Klein Bottle Hats
Klein Bottle Hat Pattern
Ravelry: Two Klein Bottle Hats pattern by Debbie New
Klein Bottle Hats and Scarves
Woolhelmina's Tiago's Klein Bottle Hat | Klein bottle, Tiago, Hats
Klein Bottle Hat Pattern
Ravelry: Klein Bottle Pi Hat pattern by Judy Parker
Klein Bottle Hats and Scarves
Art, Photography, Gifts | Schoolhouse Press
Matt Parker on Twitter: "Hey everybody, remember how much you like Klein bottles? Get in there and vote for them now! https://t.co/vIpolJgvcz https://t.co/1eQdaRDCXP" / Twitter
