The Reusable Water Balloon Crochet Pattern is a fun, quick, and super easy crochet pattern to make your own eco-friendly, refillable water balloons! They are a fun summer project for the whole family. Perfect for a pool party or as a gift. This pattern calls for about 20 yards of super bulky yarn and a size K10/ 6.5mm crochet hook. You will need to know how to complete chain stitches and half double crochet stitches, and half double crochet increases and decreases to work this pattern.