These wraps are all popolini velcro fastening popowraps. Over time Popolini have changed the style of the velcro and these wraps are old styles so they are reduced on clearance. There is nothing wrong with the wraps. The two white wraps have fold over velcro flaps, the other don't. This can be seen in the pictures.
Details of the popowrap are below ...
This is an aplix fastening wrap in a variety of lovely designs and also white. It works well over most washable nappies. It comes in a range of sizes from extra small to extra large
Sizes available -
Extra Small, 6-10lbs
Small, 6-13lbs (3-6kgd)
Medium, 11-22lbs (5-10kgs)
Large, 20-33lbs (9-15kgs)
Extra Large, 31lbs + (14kgs + )
Wash at 60 deg