Solid color Chelsea boot made of fine dark brown calfskin with extra light XL rubber sole. Regular fit. MATERIAL: Full-grain leather is a high-quality material in which the structure of the skin's natural pores or “flower” is healthy and is not altered. This material is tanned with aniline dyes to enhance its natural characteristics and color depth when the shoes are finished and polished. TAKE CARE: Full-grain skin care begins with removing dirt with a soft cloth, followed by applying a wax of the right color to nourish and protect the skin. Then scrub vigorously with soft polishing glove to polish it.