What should boots be checked for before climbing a ladder?

Before climbing a ladder, it's crucial to check for grease on your boots. The reason for this is primarily safety-related. Grease, oil, or any slippery substance on the soles of the boots can decrease traction and significantly increase the risk of slipping and falling while on a ladder. Ensuring that boots are free of any slippery substances helps maintain a firm grip on the rungs and contributes to overall stability during the climb.

The other considerations, while relevant to footwear in general, do not have the same immediate impact on safety during ladder use. For instance, durability and design may affect the long-term performance and comfort of the boots, but they do not directly determine the immediate traction and safety required for climbing. Size is also important for comfort and fit, but like the previous options, it doesn't directly address the specific safety concern of slippery soles impacting ladder stability.