Having spent years using SixSixOne D30 Evo knee pads i was very happy, but age was having an effect, they where torn and basically worn out.
I spotted a mate wearing the 5450’s and he gave them a glowing testimonial, I spotted a pair for an affordable price and inside days they where on my knees.
My first thought. VERY comfortable, but be careful with the sizing. I am a short bloke but with chunky calves. I bought the pads in small and they fit perfectly. I would probably advise others to buy the size smaller than they assumed they needed.
The pads do not have any Velcro straps. They have a cross over Lycra design around the back of the knee which TLD calls X-fit. It works very well. I have had no instances of the pads moving at all; once slid up my leg they are securely in place, even after a fall they had not moved. Because they are held in place this way you do need to remove your shoes though to get on and off and this may affect some.
One minor complaint, and it is tiny and petty. They take an AGE to dry out when soaked.