You can find this Peg Bag on Etsy.
Peg bag with tie fastening to attach to your washing line. Alternatively, you could choose to tie the peg bag onto a spare hanger. Fully lined with blue lining. Made using upcycled materials
Measurements (all measurements are approximate):
Height ~ 25.5cm (10")
Width ~ 23cm (9")
Depth at bottom ~ 4cm (1.5")