When sellers describe a collar as having a “rainbow L pattern,” they’re usually referring to a repeating visual motif: multiple “L” shapes arranged in rows or bands, colored in a rainbow palette. The exact layout can vary by manufacturer or batch—some collars show large blocky “L” shapes, others use smaller segments that create a more textured look.
That matters for real-world use. A high-contrast pattern can make it easier for you to spot your dog at a distance during daylight walks. But it can also affect how scuffs show over time—darker ink lines and multi-color prints often hide minor wear better than single-color solids.
If you’re choosing a collar for training, travel, or everyday outings, focus on more than the print. The pattern description is about aesthetics; comfort and durability come from the collar’s construction—especially the lining, stitching, and hardware.