1
|
SB :
|
Basic requirement, toe protection above 200 joules
|
2
|
SBP :
|
SB + penetration resistant above 1100 newtons
|
3
|
S1 :
|
SB + anti-static between 100K to 1000M Ohms
|
4
|
S1P :
|
S1 + penetration resistant above 1100 newtons
|
5
|
S2 :
|
S1 + water resistant upper leather
|
6
|
S3 :
|
S2 + penetration resistant above 1100 newtons
|