Boxer Shorts 

• A roomy, classic style.
• Preferred by the man who opts for freedom over support.
• Not the best under dress pants.  Too much freedom isn't always a good thing.
• Available in a wide variety of fabrics (silk,  cotton,  polyester,  etc.,) and prints (stripes,  bunnies,  etc.,)

Briefs 

• Perfect for keeping everything under control.
• A simple, well-fitting pair can make you feel good and look good.
• Can be worn with loose pants and during active sports.
• Best bet is 100% cotton. 

Boxer Briefs 

• A perfect compromise for the modern man. This style provides a bit more coverage while still keeping everything in its place.
• Widely thought to be the hottest kind of men's underwear.
• Great anytime and for any body.
• Mostly available in solid cotton colors.

Thongs 

• For the truly confident and slightly kinky man.
• No panty lines!
• Some men find them uncomfortable.
• Concerned about the implications of wearing a thong? GQ's Style Guy calms your fears.
• Silk or cotton are the usual options.

Active Underwear 

• Runners may want to buy running shorts  with a built in liner rather than wearing underwear. 
• For other active sports consider a jock strap. 
• Compression shorts  are the latest craze. They hold everything in snugly and are popular with professional athletes. 

Tank Tops 

• Comfy and pit-stain free.
• May look cheap under translucent dress shirts.
• Casual  enough to wear with bathingsuits  poolside.

V-Necks 

• Great under shirts with a bit of a lower neckline.
• Don't pair with a v-neck sweater,  otherwise it may show up through the shirt.

Crew Necks 

• Perfect when you want to unbutton a button but not show your chest hair; great for layering. 
• Make sure you always have a good amount of these on hand; the rattier shirts can be worn at home and the newer crew necks  can go under your button-down shirts.

Long Sleeve Undershirt 

• Great for guys who work in cold climates  and harsh outdoor conditions.
• These thin shirts are also good to use when working out  and can be utilized for layering.

Flannel Pajamas  and Robes 

• Cozy, warm, classic and soft.
• Any man can wear plaid pajamas  without feeling silly.
• Your girlfriend or partner may steal these!

Silk Pajamas  and Robes 

• For the confident man who wants to be swathed in good fabric.
• Expensive and not machine washable.

Terrycloth Bathrobe 

• A towel-like material will envelop you in post-shower comfort.
• You may not want to put your suit on and go to work.

Satin Pajamas  and Robes 

• Satin resists water better than silk and can make you feel like a king.
• Unlike silk, synthetic satin can be thrown in the machine on the gentle cycle.

Dress 

• Thin, high socks should match your dress pants and not your shoes.
• Argyle  is a good way for you to get funky without taking too much of a fashion risk.
• Skip the ankle socks and pick  mid calf  or full length. 

Tube 

• Simple athletic socks.
• Buy them in bulk and they'll always match.
• The more padding, the more support.
• A little added synthetic fiber will keep them in shape.

Ankle Length 

• A truncated variation on the tube sock.
• Many socks are designed to be no-show  so that they can't be seen when you are wearing sneakers.
• A little more stylish than the tube--especially when wearing shorts.

Knee High 

• For a fun, retro basketballer look.
• Keeps your calves clean.
• Important for soccer (need to have a place for those shin guards ) and baseball.

Speciality 

• Synthetic fibers can help to absorb sweat.
• There is a sock designed for every sport: running,  hiking  and skiing,  tennis  and basketball. 
• If you've got the cash, these may be a good idea to prevent blisters  and other injuries.