Dress shoes are known for their stylish looks, but not for their comfort. There isn't enough room to add technology that would make dress shoes as comfortable as athletic shoes. Dress shoes don't breathe well, thereby trapping heat and moisture. Compounding this problem, most dress socks are made with cotton or wicking fibers like polyester, nylon, acrylic or wool which cannot keep feet dry. Drymax Men's Dress socks have a special Dual Layer Moisture Removal System. This system instantly moves moisture from the skin, through the inner Drymax layer to the outer absorbent layer, keeping feet dry. Drymax Men's Dress socks are a Low Density protective padded sock. Dense padding protects feet without adversely affecting the fit of the shoes. The Dress socks are designed to keep feet dry, comfortable and odor free all day long. 3D Advanced Fit - Drymax socks fit because they were developed on special 3D shaped foot models. Each size sock includes a (M, L, XL, or XXL) color size mark for easy match-up after laundering. Anti-Blister System - Several features work together as an anti-blister system to actively prevent the formation of blisters. 1) Exceptional 3D fit, 2) Five sock sizes, 3) Seamless insides, 4) An instep-hugging arch band, and 5) Because Drymax socks stay dry, the skin stays dry too; therefore blisters normally caused by sweat or sweat vapor are prevented. Cooler Feet - Our Men's Dress Socks possess foot and leg vents designed to keep them cooler and drier by releasing heat and sweat-vapor. Active Order Control - The MicroZapA(R) antimicrobial in the DrymaxA(R) Fibers is a silver - zirconium phosphate ceramic ion-exchange resin. It fights odor-causing bacteria, helping keep socks odor free. Not a topical treatment; MicroZap is molecularly infused into our Drymax fibers. Being non-migratory and non-toxic, MicroZap provides long term Active Odor Control. Long Lasting Comfort - The special fibers used in our Drymax Socks have a comfortable springiness and do not get stiff, shrink or lose shape over time. They are designed to last a long time using the highest quality fibers, and abrasion resistant nylon fiber reinforcements in the normal wear areas. Sock Size Women Men Small 5 - 7 3.5 - 5.5 Medium 7.5 - 9.5 6 - 8 Large 10 - 12 8.5 - 10.5 X-Large - 11 - 13 XX-Large - 13.5 - 16