New Design! Darcy Duck Tub Tester Card is a terrific Health and Safety piece for the tub. This stock design Tub Tester is just what the new parents need as a back up for testing tub water with your elbow. Now you will know for certain the bath water is just right for your child! Custom design doesn't affect the production time or the cost (as long as artwork is supplied). Stock crystal strip is included on the front.