Just a heads up that Blacks have got the nite-ize droplit on sale at the moment, got mine for £3.99 instead of £6.99. no affiliation just thought a mention etc.
here's the link to the site http://www.niteize.com/productdetail.php?category_id=31&product_id=149
here's the link to the site http://www.niteize.com/productdetail.php?category_id=31&product_id=149