THICK & ANTI-BURST:The piping bags are much thicker than most of the cheap pastry frosting bags in the market. So They are flexible, strong, reliable and thick enough to bear pressure of squeezing and frosting without any burst or leakage.FOOD-GRADE MATERIAL:The piping bags is made of BPA free, nontoxic LDPE plastic, the pastry bags are tasteless,no smell, and frosting bags will ensure you and your family safe and healthy.ESAY TO USE:Just cut the narrow end of piping bag according to the size of coupler or tip,insert the desired decorating tip, fill, squeeze and that’s all. Unlike reusable piping bags, no messy clean up required. Just toss it when done using.These piping bags can be used with tips or couples, or even tipless!NICE TO HANDLE:Our piping bags have smooth exterior that gives you firm, workable grip that do not slip off hands and a super smooth interior that let icing flow freely and smoothly. It doesn't tear like other bags in the middle of cake decorationMULTI PURPOSE: Our cake decorating bags are used for cake icing,cupcakes,pastries,cookies decor,chocolate garnishing,thick buttercream frosting, macaron and to add finer detail to your dessert etc.