# Kraft bubble mailers, #0, 100 pack > Bubble-lined envelopes for small, light items. - Mailers, Starter pick - Typical UK price: $16 to $28 (a typical band, not a live price) - Platforms: Whatnot, eBay, Vinted, TikTok Shop, Depop, Etsy, Facebook Marketplace, Vestiaire Collective - Orders a week: 0–2000 - Checked October 7, 2026 Enough padding for a lipstick, a small figure or a sealed booster pack, with no box to fold. ## Kit rankings - #2 in [Best poly mailers, bubble mailers and card mailers](https://sellersetups.com/us/kit/mailers) ## Setups - [Storage auction garage setup for Whatnot, Etsy and eBay](https://sellersetups.com/us/setups/clearance-lockup-live-and-etsy): Sort a won storage unit into four zones in a weekend, open mystery crates live, and keep the 20 year old pieces back for Etsy. - [Coin and jewelry selling desk](https://sellersetups.com/us/setups/coins-jewellery-desk): A precision scale, capsules, a light box for close-ups and a careful shipping routine, for selling coins and small jewelry from one desk. - [Crystal live-show garage for Whatnot and TikTok Shop](https://sellersetups.com/us/setups/crystal-live-shows-garage): Bulk tumbled stones in tubs, an overhead phone, LED panels and small boxes for running crystal live sales several nights a week at volume. - [eBay books, games and vinyl setup](https://sellersetups.com/us/setups/ebay-books-media): Two scales, rigid mailers and shelves sorted by code, so 20 to 80 books, games and records a week go out at the cheapest rate that fits. - [eBay packing station setup for 50 to 100 orders a week](https://sellersetups.com/us/setups/ebay-packing-station-100): A fixed packing station with shelving, a thermal printer and supplies in reach, built for one person shipping up to 100 eBay orders a week. - [Handmade dog bandanas and collars on Etsy](https://sellersetups.com/us/setups/etsy-handmade-pet-accessories): A sewing corner that makes and ships bandanas, collars and leash sets on Etsy, with offcuts and seconds cleared on Mercari. - [Garage setup for 150 to 300 orders a week](https://sellersetups.com/us/setups/garage-150-orders): The step up from a spare room: a garage with picking shelves, two packing tables and a printer built for volume. - [Japanese import reseller with proxy buying](https://sellersetups.com/us/setups/japan-proxy-import-desk): Prize figures, Japanese-language card boxes and stationery bought through a proxy, then sold on Whatnot shows and eBay listings from one desk at home. - [Squishy toy live shows from a bedroom corner](https://sellersetups.com/us/setups/squishy-live-corner): Needoh-style squeeze toys sold in fast Whatnot and TikTok Shop shows, packed in padded envelopes from one desk and three tubs. - [TikTok Shop live setup for beauty sellers](https://sellersetups.com/us/setups/tiktok-shop-beauty-starter): A ring light, a mic, a plain backdrop and protective packing for filming TikTok videos from one corner of your room. - [Wholesale pallet setup for TikTok Shop and eBay](https://sellersetups.com/us/setups/wholesale-pallets-tiktok-ebay): New overstock bought by the pallet, sold in live bursts on TikTok Shop and steadily on eBay, packed from a two-table line in a two-car garage. ## Who bubble mailers suit Kraft bubble mailers suit you if you sell small, light items that need some cushioning: a lipstick, a phone case, a sealed booster pack, a small figure, a pair of earrings in a box. You skip folding a box and the package stays slim. A pack of 100 lasts months if you are starting out. If you sell cards or small electronics on eBay, Mercari or Whatnot, you can use them as your main mailer. ## #0 and the sizes either side Bubble mailers come in numbered sizes from #000 up to #7. The #0 is a common small size, roughly 6 × 10 inches inside, which fits a phone case, a few cosmetics or a toploaded card. Makers vary by a fraction of an inch, so read the inside size on the listing. The standard build is a kraft paper outer with a bubble lining and a peel-and-seal strip. White and poly outers exist too; kraft hides scuffs and takes a thermal label well. Allow for the bubble lining when you measure thickness. A filled mailer that bulges or goes rigid no longer counts as a flat envelope with USPS, so ship it as a package with USPS Ground Advantage and price it from the weight. ## Bagging, sleeving and sealing Put small loose items in a zip bag first so nothing escapes through a corner, then slide the bag in. Press the strip down firmly along its length. For cards, add a stiffener, or sleeve the card and slot it in a toploader: padding stops knocks but can't stop a bend. For jewelry, put the piece in a small jewelry box, then into the mailer. Stand a box of mailers beside the printer so you can stick each label straight onto the next one. ## Card mailers, poly bags or boxes Rigid cardboard mailers suit flat items that must not bend, such as graded cards and prints. They protect against folding better than padding does. Poly mailers cost less per order for clothes that need no padding. For anything boxed or fragile, step up to a small single-wall box. ## Cents per mailer A pack of 100 runs $16 to $28, so 16 to 28 cents a mailer. For small items it replaces a box, tape and void fill, so the saving per order adds up. Buy your most-used size in bulk and keep a few of the next size up. Overstuffing a too-small mailer bursts the seam, and a slightly bigger one costs a cent or two more. ## Common mistakes - Step up a size before the mailer bulges. Overfilling bursts the seal or the side seam. - Padding alone lets a card bend; add a toploader or a cardboard stiffener. - A packed bubble mailer ships as a package, not a letter. Buy a package label from USPS or Pirate Ship instead of sticking stamps on it. - Loose small parts slip through a split corner, so bag them first. - Above a pound or so of dense item, the paper tears. Use a box. ## Guides - [How to ship Pokémon cards in the US](https://sellersetups.com/us/guides/how-to-post-pokemon-cards): Penny sleeve, toploader, team bag and a rigid mailer: the layers that get a Pokémon single to a US buyer flat, plus when an envelope stops being enough. - [Small business packaging setup for 100 orders a week](https://sellersetups.com/us/guides/packaging-setup-100-orders): The kit, stock levels and daily routine that keep packing 100 orders a week from home down to an hour or two a day. - [How to ship jewelry safely in the US](https://sellersetups.com/us/guides/post-jewellery-safely): Pick the USPS service and coverage that fits a ring or a gold coin, pack it so nothing rattles, and keep the proof you need if a claim comes. - [How to start a small business from home in the US](https://sellersetups.com/us/guides/start-selling-from-home): Which platform suits what you sell, what the first kit covers, and a checklist for your first week of orders shipped from home. - [TikTok Shop live setup for beginners](https://sellersetups.com/us/guides/tiktok-shop-live-setup): Your first TikTok Shop LIVE from a bedroom corner: phone position, light on your face, clear sound and a run of show that keeps viewers watching. - [The July 2026 USPS under-1-lb change for sellers](https://sellersetups.com/us/guides/usps-under-1-lb-change): Since July 12, 2026, commercial Ground Advantage dropped its ounce tiers under a pound. What it costs card, jewelry and accessory sellers, and how to adjust. ## Questions ### What fits in a #0 bubble mailer? A phone case, a few cosmetics, a toploaded card or a boxed small figure. Confirm the inside size on the listing before you buy. ### Can I ship trading cards in a bubble mailer? Yes, with a toploader or stiffener inside. The padding alone won't stop a bend. ### Can I put stamps on a bubble mailer? A packed bubble mailer is usually too thick and rigid for letter rates. Buy a package label online and ship it with USPS Ground Advantage. ### Are kraft bubble mailers recyclable? Mixed paper and bubble lining usually goes in the trash unless the maker offers an all-paper version. The listing says which you have. ### Which size should I buy first? A #0 covers most small items. Add the next size up once you list larger pieces.