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Regularly: $10.49/Roll

Other Available Sizes:

  • Versatile decorating tool for bakers
  • Disposable to eliminate cleanup
  • Made of flexible .003" polyethylene
  • Can be used with both hot or cold foods
  • Clear, non-slip plastic
  • No seams to inhibit use
  • Wide design for easy fill

UPC Code:




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You May Also Need

"You May Also Need" items are guaranteed to work with the item you are viewing, such as lids that will fit a cup or casters that will fit a piece of equipment. If an item is not listed in this section, we do not guarantee that it will work with the product you are viewing and do not recommend that you purchase them for use together.

Quickly and efficiently decorate your cakes, pies, and other signature desserts using the Ateco 4721 21" decorating bag.

Whether you're decorating at a commercial bakery or for a catered event, this seamless Ateco bag is a convenient and reliable option. Thanks to its disposable design, it helps save valuable time by eliminating the need for cleanup. Plus, this decorating bag can be used for both hot and cold foods for maximum versatility.

  • Microwave Safe

    Microwave Safe

    This item can safely be used in the microwave for food service applications.

Clear, Non-Slip Polyethylene

Made from .003" LDPE polyethylene, this clear decorating bag allows you and your staff to see the icing inside the tube so you can easily anticipate refills! The bag is also non-slip for superior grip when decorating made-to-order cakes and pastries.

Wide Design

This 21" bulk decorating bag features a wide opening for easy filling.


Thanks to its seamless design, you can cut this bag to size without worrying about rips.

Outstanding Quality

Bringing you innovation and quality for over 100 years, Ateco, an August Thomsen brand, has been internationally known in the industry for creating baking tools of superior craftsmanship and design. By continually improving on tools, materials, and packaging, Ateco is dedicated to providing professional bakers with the kitchen essentials they need to succeed in an ever-evolving industry!

Watch More Videos

How to Pipe a Rose with Buttercream Frosting

Ever wonder how to professionally decorate your cake? Watch this short video and learn how to style up your next cake with a classic buttercream rose.

Use these simple steps to professionally add a buttercream rose. You'll need a spatula, rose tips, a leaf tip, couplers, a flower nail, a rubber spatula, and piping bags. Begin by squeezing cream onto the flower nail in a circular motion, creating a lump with a tip on it. To create the layers of a rose, squeeze cream in an short arch motion and continue rotating the rose until you have the desired amount of layers, or petals.

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Ateco Piping Bags, Short Spatulas and Pastry Tubes

Looking for just the right tools to decorate your cakes with? Try the Ateco piping bags, short spatulas, and pastry tubes! These tools will help you create weaves, ribbons, scalloped edges, and more that will leave customers impressed every time.

Hi, this is Julie Bashore from the Sugar Arts Institute. Let’s have fun with some of the Ateco piping tips. Working with their disposable piping bags that come on a roll, they tear off really easily, I like to work with the smaller 12” bags but they also have 18”. Working with a coupler, remove the nut from the base of the coupler and place the base in the bag as tightly as you possibly can. Working with a pair of scissors, above the screw marks, just cut the edge of the bag and remove that. And then you’re going to choose the piping tube that you’d like to work with, place it on the top of the coupler, and screw it down firmly. This is a piping bag stand; it’s very convenient, especially if you’re piping alone or you don’t want to interrupt anyone to fill the bags, it holds the bags really well and you can slip your icing in there. This is the short-ended Ateco spatula which is quite wide so it’s really convenient for picking up the buttercream. Pull the bag up, place it on the table, and spread the buttercream down to the end. And then of course it’s important not to forget to burp the bag. This piping tip that I’m using is a ruffling pipe piping tip, and it’s absolutely amazing how quickly it works. Have a look, come in close. Doesn’t that give an awesome ruffle? Let’s work with another tip. This is the shell tip; don’t forget to burp your bag. This is great for a border; in fact, I sometimes use it on the edge of my ruffle. It gives a really nice shell design. The tip itself is curved so it gives a nice puffy shell appearance to it. Ateco has a new set that they’ve brought out: polycarbonate plastic piping tips, they are large tips, very strong and very precise in the edging. This one is a basket weave design; it really makes an awesome border. Place the bag over the holder, again, don’t forget to push the butter cream all the way to the edge and burp the bag. It has two edges, a flat edge and a scalloped edge so this makes a great ribbon design; you can also wiggle it or make just a ribbon and also wiggle this. Flip it over and wiggle. Great for basket weave.

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Compare to Other Products

Overall Dimensions:
  • Length: 21 Inches

Customer Reviews

  • Overall User Rating: Ateco 4721 21" Clear Disposable Pastry Bags (August Thomsen) - 100/Roll

    4.9 stars from 113 reviews


    People Talk About:

    bags great bag pastry size icing large cupcakes price disposable

    These are our decorator's favorite bags. Nice and long so you don't need to worry about overflow. Just simple, inexpensive bags. We go through a lot!

    from Thirsty Whale Bakery Posted on

    We purchase several rolls of these at once. So nice to use and an affordable price over the other online retailers I have searched. Holds up well during piping.

    from Confectionary Designs Posted on

    These bags are a great value, and don't take up much storage space. They are also a better price than I've seen in many places.

    from The Sweetest Things, LLC Posted on

    Great price for this great product. i was looking for a pastry bag to fit the entire ricotta bucket. it works great, only put a rubber band to close it and it is ready to use. it is reallu easy to put the riccota in all my dishes.


    This product is wonderful... is great to use to icing cakes... or cupcakes... and works well with the products they sell on here... all the tips and also the large plastic coupler... highly recommend

    Posted on

    such a great deal for the price! they are by far my favorite piping bags for medium to large size projects. I make a lot of treats such as cupcakes and cookies for a homeless shelter which I pay for out of my pocket. these bags are very cost effective and durable. I haven't had any break open yet. the dispenser roll box is a bonus as well. I will be reordering as soon as I need more!

    Posted on

    very good for the price strong and do not break easily will order again fast delivery just the right size can be used for icing or for catering items have ordered over and over again

    from Emmas Cakes Posted on

    I use all of the sizes of the Ateco disposable pastry bags. They are a great bargain and work well. The 21" size is a great size for bigger projects, like mountains of meringue or lots of buttercream.

    from Sugar Buff Posted on

    We order these pastry bags time and time again!!! They come in a convenient roll and is a very good size. Great for buttercream decorating and the bag is really sturdy

    from Sweet Buttons Posted on

    You can never have too many disposable pastry bags and these are just the ticket! High quality but not a high price. Love these bags.

    from Buffi Cakes Posted on

    I love this disposable clear pastry bags not only because of the quality of plastic that is very thick and stretchy also, it came with the dispensing box!

    from Sugary and Savory Posted on

    I use these piping bags for so much more than piping frosting. They are wonderful for apllying sauces too. Strong bags, great size for almost any use.

    Posted on

    Great pastry bags for decorating. It's easy to take a part from roll and get it ready for work. We also like a size which is great for high volume

    from Tom Posted on

    The quality of these bags is exceptional they will last a good squeezing I recommend you buy them the best price available around you can't beat the quality .

    from H&H CITY PIZZA Posted on

    These are larger pastry bags can be used as a pastry bag for cupcakes or cakes but I like to use mine for selling candy

    from Sweet Candy Finds Posted on

    These larger pastry bags are perfect for frosting several cupcakes without having to reload. It is yet another great quality product from Ateco, as usual.

    Posted on

    las mejores bolsas que he comprado , muy muy resistentes las lavo y vuelvo a usar varias veces sin que se rompan , estoy altamente satisfecha con este producto , si buscas valor por tu dinero este es el producto indicado 10 estrellas le doy :)

    Posted on

    I've used the Ateco 12" and 18" pastry bags, and the 21" is a great addition to those, especially for larger jobs. I've used them for frosting, mousse, choux, meringue, etc. The dispensing box and bag roll make them easy to use.

    from Sweet Indulgence Posted on

    In my bakery, we use these most often to ice large batches of cupcakes. They work great because the plastic is very sturdy and the size is perfect for fitting enough icing in the bag that you can ice quite a few cupcakes in one go. Loves the box they come in too, perfect for storage

    from KMSK Kreations Posted on

    As a baker, I have to get things frosted fast, mess free and done correctly. These bags are great for that. Fill the bag, clip end and frost. Can be used with tips too.

    from Crystal's Cupcakes And Catering Posted on

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