What are they made of?
Denier is a unit of measurement that is used to determine the fiber thickness of individual threads or filaments used in the creation of textiles and fabrics. Fabrics with a high denier count tend to be thick, sturdy, and durable. Fabrics with a low denier count tend to be sheer, soft, and silky.
Totes are usually nylon or polyester. If nylon, the addition of Nylobond or similar adhesive/catalyst would be suggested, if Polyester, (unless white or light totes with a black print), a bleed resistant ink. The Nylobond allows for lower cure temps with full cure occurring later due to the catalyst. With Poly, lower temps are always in order to reduce bleeding, so low temp inks or additives are always helpful.
As always, test a piece through the tunnel first.