Reference:
ONE Pattern with 3 sizes!
Video Tutorial | SVG Files | Projector File
Sewfisticated Trio can be just a packing cube OR your daily crossbody bag with added inner pocket options for each size. Definitely a MUST have pouch for all ages!
Come join me and see how I use Sewfisticated Trio as packing cubes or crossbody bag!
Use Gate Ring to connect size Medium and Large as Crossbody Bag. 
Machine used: Juki TL2200-QVP Mini
Stitch 626 from Backstitch Fabric Group
Main exterior - Vinyl. Inner pockets - Cotton Woven fused with medium-weight interfacing and pre-made bias tape. I used #5 nylon zipper for Z1 and #3 for inner zipper pocket.
Clear Printed Vinyl from Bombsheller Custom Fabric Group
Main exterior - Clear Printed Vinyl. I used #5 nylon zipper for Z1 with no inner pockets. Pre-made bias tape.
Clear Printed Vinyl from Whimsical Fabric Designs
Main exterior - Clear Printed Vinyl. I used #5 nylon zipper for Z1 with no inner pockets. Pre-made bias tape.
Kings Court Tokidoki x Jujube (repurposed from bags)
Main exterior - thin waterproof fabric fused with medium-weight interfacing. Small and Medium piece fused with Decovil Light and Large with thin foam. Pre-made bias tape. Lining and Wrist Strap - CW with medium-weight interfacing. #5 zipper for Z1 and #3 zipper for Z2