LeMieux Plain Pro-Sorb GP Numnah Black. The LeMieux Plain Pro-Sorb GP Numnah has a swan neck design and a reinforced girth protection area. This GP numnah is designed with the Pro-Sorb system which allows the insert of pads to provide adjustment as well as additional cushioning under the saddle. The Plain Pro-Sorb GP Numnah has D-ring straps which are contoured to provide a better fit as well as allow breastplate attachments. The numnah has a waffle inner lining which helps regulate temperature and improves breathability with its wicking properties. Read more… The numnah also has double velcro girth straps with an optional inner locking loop to help reduce the chances of it slipping. This GP numnah is ideal for competitions or everyday wear as it is smart whilst being durable and effective.