This product has seal rubber tubes, there are no seams on the inside area of the knee on this pad.
Answered on 3/24/2013 by Community Answer from None
The sizing information was wrong!!!! the offical site was diferent (http://www.cliffkeen.com/Catalog/Global.aspx?pageid=sizinginformation)i bought from you two Cliff Keen Air Brace Knee Pad (M) and was too tight according to you M was (15 1/2- 17) and official site was( 13 1/2- 15 1/2 ) what can i do. its your wrong. i can not return because i have use it