- Denim shorts for boys. Elasticated waist with drawstring. Indigo knit is soft like sweatshirt. Classiv five-pocket style. The model is wearing a size 152 and is 156 cm tall . JACK & JONES JUNIOR. Drawstring are fixed, app- 85 cm long, 100% cotton Indigo Knit Indigo Knit combines the comfort of knitted sweatwear with the authentic indigo look of denim. Indigo Knits make you look sharp and feel just as comfortable as you do in a pair of sweatpants.