Due to the incredible heat wave we are having in the UK at the moment, I have switched the order of the last three hacks a little. Nobody needs long sleeves and thumbhole cuffs here at the moment! So today I have a tutorial for a hi-lo hem with a side vent (or split side seam). I first used this technique in the Hawthorn Zip-up Sweatshirt, and it is such a lovely detail to add to t-shirts that would otherwise be more basic. Using twill tape to finish the vent also gives an opportunity to add ...