You can go to any baseball department and get padded slider shorts as well. You might find something cheap. I really like the dye/proto sliders though because they have compression fitting material like the body armor type stuff which actually helps fight muscle fatigue as well as provide padding.
Etek 3LT grey/black f/s
Valken Proton greyish/black f/s
68 4500 PE stubby, LP output f/s
68 4500 AIR tank(no reg) f/s
Creed Battery, eyes and noid f/s