You can buy patches and adhesives in most camping shops - depending upon the material that your air bed is made of. If you fully inflate the bed and test first where there are creases or folds. The hole is likely to be pin size, if you 'listen' with one ear close to the surface you might either hear the 'hiss' or feel the air escape. Then deflate the mattress, patch the hole with an oversize patch, leave for several hours before testing.
Rob, April 2009
