Did a little looking around:
Stihl Woodcutter - 6 layers
Stihl Performance - 6 layers
Stihl ProMark Pants - 9 layers
Stihl Promark Chaps - 6 or 9 layers (not sure what that means)
Husky Tech Pro - 5 layers - 600 Denier Outer
Husky Tech Wrap - 5 layers - 1000 Denier Outer
Husky Functional - 5 layers - 600 Denier Outer
Forester chaps - 12 layers
Labonville Apron - 6 layers - 1000 Denier Outer
Labonville X-Tream Comp - 10 layer - 1000 Denier Outer
Stihl Woodcutter - 6 layers
Stihl Performance - 6 layers
Stihl ProMark Pants - 9 layers
Stihl Promark Chaps - 6 or 9 layers (not sure what that means)
Husky Tech Pro - 5 layers - 600 Denier Outer
Husky Tech Wrap - 5 layers - 1000 Denier Outer
Husky Functional - 5 layers - 600 Denier Outer
Forester chaps - 12 layers
Labonville Apron - 6 layers - 1000 Denier Outer
Labonville X-Tream Comp - 10 layer - 1000 Denier Outer