Once you are ready to checkout, head over to the Cart icon at the top right of your screen. Choose "Store Pickup" and then select the location, date and time you wish to collect your order.
I wish I'd bought drop cloths like this years ago for painting. Got 2 of the 4 x 15 and they were perfect. Washed & dried up nice and soft and still really absorbent for the little drips. Can't recommend them highly enough.