Specially formulated mixture of graded sand and high-performance polymer binding agent designed for all paver and natural stone joints up to 4''(10 cm) ! It's superior performance and durability is ideal for the installation of new pavers or natural stone as well as replacing existing joints. It will remain stable and flexible in the most extreme weather conditions and freeze/thaw cycles when properly installed. Ultimate versatility, for all paver and natural stone joints from 1/8'' to 4''(3 mm to 10 cm). Horizontal or sloped surfaces, residential or high-traffic commercial applications. Stabilizes pavers, prevents erosion, ant hills & weed growth. Will not stain pavers, safe to use by the pool. Perfect for cobble stone and driveway apron applications. Three natural colors : grey, beige & black, no pigment or dyes.