It's a bit misleading to be honest. Picture shows the latest model. Description is missing the information about the Gel knee padding.
The following has been taken from the Vitas website advertising the product with the same image
"Internal Poly Armour Knee Guard - Thermo plastic knee cup moulded to fit the shape of the knee. Impact Gel - Inserted to the knee cup for comfort. "
compared to Barringtons
"KNEE GUARD
Made from CCT materials, this specially moulded component is inserted inside the leg guards, for total
shielding in this key impact zone. The ergonomic design fits the contours of the knee, and maximises leg movement."
As others have said though they offer a FREE returns service via collect+ so might be worth giving them a chance to rectify the situation as it could be an honest mistake