RTS - THESE ARE REUSABLE.
we love these! measure 5" x 9" (I estimate 12-16 ounces)
Comes with straws (colors ship random)
Fill with anything! Juice, fruit, adult beverages....
I love the freeze idea too, keep it cold for the trips down the river!
Sold in packs of 10 with 10 straws
or Packs of 100 with 100 straws