Merrell Lulea Mid Waterproof Women's Walking BootsM Select Dry UpperConstructed using a PU coated leather and mesh upper, the Lulea Waterproof Walking Boots work to cool, dry and comfortable at all times. The mesh allows cool air to permeate throughout the boot creating a perfect microclimate for your skin to thrive in whilst the PU coated leather increase overall structure and support. The leather overlays have been added to the upper to provide added structure and durability; the reinforcements promote a secure, supportive fit and increase the boots durability by resisting the risks of wear and tear. M-Select dry has also been used within the upper to seals out water and allow moisture escape. This unique technology provides outside protection when you're on the move. M-Select Dry products shed external moisture from precipitation and wet ground conditions while allowing moisture from physical activity to escape to give you dry comfort inside and out.The bellows tongue prevents moisture and debris from entering the boots so you can enjoy distraction-free strides. Completing the upper is a lace closure system which locks down the midfoot to reduce in-boot slippage.