These are the terms you will come across when browsing through our selection of bags, totes, duffels, backpacks, and more!

Denier: the D stands for denier. Getting a bit technical, it is a unit of measurement that describes the linear mass density of the material, calculated by the mass in grams of a single 9,000 meter strand (one denier is the mass of one 9,000 meter strand of silk).
A great indicator of strength and durability, a larger number is better when comparing deniers of the same material. Not all materials are created equal however, so a lower denier might still be stronger than a higher one if the material of the former is tougher (ex. 400D nylon will be stronger than 600D polyester). 

GSM: stands for "grams per square meter" & is a measurement of density. Like denier, it is a good measure of strength and durability. A higher GSM is generally stronger than a lower GSM, which makes it more resistant to rips, tears, and other damage.

Woven: most fabrics or materials on our site are of the woven variety, which consist of yarns placed at right angles to each other. Woven fabrics are the strongest, and obtain their strength from the intricate weave of the "over-under" threading technique. Woven fabrics are of higher quality than non-woven materials. 

Non-woven: generally cheaper to manufacture, this affordable type of material is made from melting or gluing the parts together, instead of a strong, layered weave. 

Polypropylene: often made from recycled plastics, this man-made material often feels like a wax paper towel. It's a good insulator, can float, and does not absorb water easily (dries fast). 
*Special care must be taken when imprinting this type of material. Heat pressing is not recommended, as the polypropylene may melt or disintegrate. 

Drop: usually measured in inches, this measurement is taken from the highest point on the strap to the opening of the bag. Sling bags will have a larger drop than a tote bag for example, as more length is required to wear the bag across your body.