PHD the specialist outdoor clothing and equipment company have created a unique section to their site which lets you design your own jacket.
This feature is nothing new with there being a custom sleeping bag site already. When designing the jacket you can decide the size of the arm length, body length and body width in sizes from XS to XXL. As well as the sizes you can select colour, fabric, the type of filling. Different combinations, result in different prices. In total there could be as many as 48,000 permutations when designing.
A great idea especially if your in between sizes. Check it out at http://phdesigns.co.uk/design-your-own-clothing/index.php.