If he isn't already really girthy, what about something like this that has an open end so he gets a lot of pleasure plus protective cover? http://www.amazon.com/Pipedream-Products-Fantasy-Extensions-Enhancer/dp/B00NH7L0CK/ref=sr_1_4?s=hpc&ie=UTF8&qid=1429682342&sr=1-4&keywords=girth