There is one I made and it is called the Girly gym bag ps035. I bought the pattern at LQS. It is designed by Penny Sturges and the pattern is put out by Quilts Illustrated. This is a quilted bag and uses the single sided fusible foam.

this is it I think Sewingsuz
I ordered it
thank you
can always count on someone on here for help

I found this tutorial for a quilted duffle bag. It's really cute and can definitely be used for the gym. http://sewplicity.com/2012/07/tutori...ed-duffle-bag/

try this one:
http://debbieshore.blogspot.com/2013...gs-i-used.html

scroll down to page 5? to see one made out of lots of fabrics.

I use a professional tote as my gym bag. Lots of pockets and there is a nice pocket on each end for a water bottle.

thank you Mimi Sews
I like that one too

thank you Jane Quilter
I like that one too

Google "Ginormous Beach Bag". This is a great, simple bag that can be made isn a few hours. Our guild made these up for local kids entering foster care.

I have made 6 duffle bags and my grands take them everywhere! They love them. Guess who doesn't have one? Me!

I agree and it looks like there is some flexibility regarding size in the pattern, so you can make it almost any size you want.