Heavy cotton yarn for backpack

[color=blue]Hi, I have been knitting alot of the Lionbrand pattern backpacks. The pattern calls for Lionbrand Jiffy, but for the summer I would rather use something in cotton. Never worked with cotton before. Can you recommend a cotton yarn that would be comparable to the Jiffy yarn? Thanks. Glenda :wink: [/color]

My LYS has ā€œmop yarnā€ which looks likeā€¦ a mop!!! Itā€™s super thick, very sturdy, and summery looking (to me). Might be comparable to Jiffy, but Iā€™m not sure of the weight (Iā€™ll check when I stop in tomorrow).
I have used sugar and cream and the lion brand cotton, but they are much much thinner than the Jiffy yarn; it might not work for your patternā€¦ or it might knit up really tinyā€¦ toddler backpack size instead of adult back pack size.

You could always try holding the sugar-n-cream doubleā€¦or even TRIPLE! :shock: