Coastal's Handcrafted Circle T Oak Tanned Leather Double-Ply Spiked Dog Collar offers rich color that becomes even more beautiful with age and is embellished with traditional spikes and spots to add a little edge. Made from full-grain leather, this top-quality collar is vegetable tanned using tree bark to achieve excellent leather character, and the hides are dyed for luxurious color. The Circle T Leather Collar offers a touch of elegance with strength and durability.