Buy Navy Grey Plain 100% Cotton Short Pyjamas 2 Pack (3 16yrs) from Matching Sleepwear Sets Cotton On Stripe Sleep Shorts Mens Cotton Sleep Shorts 2 Pack Classic Knit Grey Marle & Navy Pack Buy Navy Blue Stripe Woven Short Pyjamas Set 2 Pack from the Next UK. The Summer Navy Mehroon Grey Striped Contrast Sleepwear Shorts Set for boys is made from a soft, breathable cotton blend fabric, offering comfort and durability. The set features a stylish navy and maroon grey striped design, perfect for warm summer nights. The relaxed fit ensures easy movement, making it ideal for both lounging and sleeping.