Adjustable ruby collars here typically cover neck sizes from about 16 inches up to 30 inches.
Some ruby collars use reflective threads or reflective design details to improve low-light visibility for evening walks.
Care varies: some collars are labeled machine-washable, while others recommend spot-cleaning or wiping with a damp cloth—follow the product's care instructions.
Most include a D-ring or metal ring for leash and ID tag attachment; some listings also note reinforced stitching for added durability.
Many ruby collars are labeled as adjustable and marketed for all ages, indicating suitability from puppy through senior per the product details.