One of the key elements of a Channel swim is to determine what food and drink sits well in your stomach during the swim. It's too late to try out new ideas on the day, so it's vital to be able to practice with various substances beforehand.
This offer from Vita Coco means I will now be able to practice with this product well in advance of my swim.
For information on the Vita Coco product, please see their web site at http://vitacoco.com/uk/