Masontops sets the standard for mason jar accessories and this 6 piece Mason Jar Hydration Set is no exception. From the sleek lines of the jars to the quality and practicality of the lids and sleeves, this versatile hydration system will keep your fluid levels optimized with your favorite beverages. The 24 oz wide mouth jars are made of non-porous soda lime glass, which resists the growth of contaminants. We've embossed convenient measurement indicators to make it simple to follow recipes and concoct your own beverage creations. We even embossed our retro-style logo which contrasts well with the jars contemporary design. The Multi Top lids feature a silicone gasket to prevent leakage, so you can shake up your smoothies and salad dressings without liquid seeping out from the rim. The basic black lids also feature an easy pour flip top cap that locks into place whether open or closed. This set features a reversible gray/black triple-layer neoprene insulating sleeve to keep drinks hot or cold and comfortable in the hand. The sleeve also prevents condensation rings on furniture. It's reinforced stitching means it will last for years. The entire set is easy to care for: the jars and lids go into the dishwasher and the sleeves in your washing machine. So fill them up with water, juice, smoothies, teas, coffee, cocktails, craft beers and enjoy! Of course, the they're fully compatible with all Masontops wide mouth accessories for fermentation and even storage of non-food items. Trust the Masontops name for the very best in mason jars, tools and accessories!