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
Klein Bottle Hats and Scarves
Klein Bottle Hats
Art, Photography, Gifts | Schoolhouse Press
Knitty: Summer 2006
Klein Bottle Hat | String-Or-Nothing
Klein Bottle Hats and Scarves
Klein Bottle Hats and Scarves | Klein bottle, Hats, Bottle
Calvin Klein Kids' Monogram Logo Ribbed Beanie Hat, Eggshell at John Lewis & Partners
sarah-marie's knitted klein bottles
Knitty: Summer 2006
Ravelry: Klein Bottle Pi Hat pattern by Judy Parker
The things we do for love | Granny Mauds Girl
Adventures in Mathematical Knitting | American Scientist
Ravelry: Klein Bottle Pi Hat pattern by Judy Parker
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
Klein Bottle Hats
Crochet Klein bottle hat – it's Smurftastic! | InSkein Yarns
Ravelry: Two Klein Bottle Hats pattern by Debbie New
Klein Bottle Hats and Scarves
Tim's Klein Bottles - YouTube
Klein Bottle Hats and Scarves
Knitty: Summer 2006
Klein Bottle
Klein Bottle | Organizations and Markets
