PURE STAINLESS STEEL SELECTION - The boston shaker tins are meticulously crafted by 304 stainless steel that strongly accommodate to different liquid pH, oxidizing and extreme temperature environment. As well to the other barware accessory tools, are also made of high-quality stainless steel. DURABLE & SAFE CRAFT- Safety first, unlike the shakers with surface plating or lacquer process. It won't give you a terrible bartending experience that are good for looking decently, but peels off after several use. As well to the weighted bottom shaker, which comes off if it with poor quality. MORE PROFESSIONAL SKILLS - Compare to the normal cobbler shaker, the Boston shaker provide a larger capacity that you can even make two glasses of the same by once. It'll hold more air, ice and albumen to fuse to shake a large amount of foam if you need. Air can make a glass of drink taste and look better. SUEDE PORTABLE CARRYING BAG - If you are planning to have a cocktail tour or go travel for camping, you need this bar kit carrying bag to hold the essential tools. It's not too big or too complex, moreover, the size is best fit for backpack or taking on hand. For use, this portable carrying bag is a good choice.