Custom Round Mylar Bags

Film, Barrier and Closure

Round bags are made from the same layered films as standard mylar pouches. A metallised barrier layer keeps out moisture, air and light, which matters for sweets that go sticky in damp air and snacks that lose their crunch. Matt films give a modern, soft look; gloss films make colours and metallic effects shine.

A press-to-close zip lets customers reseal the bag between snacks. Above the zip, a heat seal across the top gives a tamper-evident closure, and a tear notch makes opening easy. For favours handed out at parties, some customers skip the heat seal and use the zip alone.

A clear front with a barrier back is possible if you want customers to see colourful sweets through the bag. It lets in some light, so it suits products that sell quickly. For chocolate and anything that needs a longer shelf life, a fully opaque metallised film is the safer choice, and the printed design can show the contents instead. Bags without a zip use the same film as our heat seal mylar bags.

Designing Artwork for a Round Face

The circle gives you a canvas with no corners, which suits bold centred designs. A coin design with a raised-looking edge and a central portrait, a badge with a ring of text around the rim, or a cartoon face with the zip as the forehead line all make the most of the shape. Metallic gold or silver film looks especially convincing as a coin.

Keep text away from the outer seal area, which is a few millimetres wide around the edge. The back face can carry ingredients, allergens, weight and your details. If the bag is a gift, the back is also a good place for a short message.

Because the zip sits as a straight line across a curved shape, plan the artwork around it. Many designers place a band of colour or a line of text exactly where the zip falls, so the closure looks like a deliberate part of the design rather than an interruption. The proof marks this line so you can align artwork with it. You receive a free proof inside the circle so nothing important sits on the seal.

• Coin and medal designs on metallic film
• Badge layouts with text around the rim
• Cartoon faces and characters
• Ingredients and details on the reverse

Choosing a Diameter

Round bags are measured by diameter. Remember that a circle holds less than a square of the same width, and the zip and seal use up part of the top. Smaller diameters suit a few sweets or a sample; larger diameters hold a giant cookie or a generous handful of snacks.

The best approach is to measure what you want to pack. For a cookie, measure its diameter and thickness and add room for the seal. For loose items, pour a portion into a flat bag and see how much space it fills, then choose a circle a little larger.

If you plan a range, two diameters often cover everything: a small one for samples and favours and a larger one for retail portions. Keeping the design style the same across both makes the range instantly recognisable. Our guide on how to measure a cookie's diameter explains the allowance a zip needs.

Filling and Display Tips

Round bags are flat pouches with no gusset, so they hold flat or lightly filled products best. Overfilling makes the circle bulge and distorts the design. A light fill keeps the face smooth and the artwork reads perfectly.

For retail display, a hang hole above the zip lets bags hang on pegs, where the circular shape breaks up rows of rectangles. In a box or bowl on a counter, a pile of round bags looks like a treasure chest of coins, which suits impulse buys.

Store unfilled bags flat in their carton and away from heat, so the zips stay aligned and the circular edges keep their clean shape until packing day. Pre-filled bags on a counter are often closed with thank you stickers over the seal.

Pick the Diameter From the Biggest Thing Going In

A round bag holds less than a square one of the same width, so size it from the largest item it will carry rather than the weight. For a single cookie, measure the cookie's diameter and thickness and add room for the zip; for sweets, fill a round of paper the size you have in mind and see how flat the face stays, because overfilling bulges the artwork. Decide on a zip or a plain heat seal, a hang hole for pegs and whether both faces carry different print. Metallic film suits a coin look; a matt film suits a softer gift. Party favours often use plain round bags with die-cut stickers to personalise each bag rather than a printed run per name.

Send the diameter, film finish, number of designs and quantity, and a custom quote comes by email within one working day. The free proof shows both faces inside the circular cutting line with the zip and seal zones marked. Bags are printed, sealed and cut in 4 to 7 working days after approval, arrive by tracked courier to UK mainland addresses, and misprints or uneven cuts reported within 10 days are reprinted or refunded.