Don't be boring! There is a fine line between being professional and being boring when it comes to your choice of envelope and this one is in a rare sweet spot. The Caribbean Blue is an interesting eye-catching colour but it's not garish or silly. The envelope also includes a tappered flap, a popular choice due to its minimal and simplistic nature. Its weight of 120gsm is reasonably standard and is the perfect weight for an evelope of this size, that by the way is 220x220mm.