What size do I need?
Use the size chart if you need to match a product to the right envelope without guesswork.
Open size guideStart with the question you actually have
Where should I buy in Canada?
Compare Amazon, packaging suppliers, and case-quantity options before you place an order.
Compare suppliersWill this ship as letter mail or a parcel?
Check the thickness and classification rules that decide whether a cheap shipment turns into an expensive one.
See Canada Post rulesBrowse by use case
Clothing and soft goods
T-shirts, jeans, hoodies, and small apparel orders.
See clothing guideTrading cards and collectibles
Smaller protective mailers where thickness and rigidity matter.
See card guideJewelry and small accessories
Low-weight shipments where overpacking can eat your margin.
See jewelry guideBefore you buy a case
Mailer type
Read poly vs kraft before you buy hundreds of the wrong material.
Quantity and storage
Read the bulk buying guide before you lock cash into sizes you rarely use.