I highly recommend this unassuming-looking sleeve to protect any razor from rust.  It has about as much panache as a '89 Camry, but just like that fine tool the damn thing just works.  Sure beats the hell out of fussing with oil and blades to me.

Like malaria pills, all you've got to do is actually use 'em & you'll have nothing to worry about anymore; they get less oily over time, but that does not affect their capacity for wicking away moisture.  This is an effective anti-rust solution for a lifetime; it is not merely a barrier that prohibits moisture from entering within, but instead a tool which continually draws moisture from the inside to the outside.  Always leave it where it can expunge the moisture to a larger environment, and if those larger environs are as crazy humid (~85% at all times) as a sailboat or rainforest's innards, I'd recommend the extreme step of putting the razors/sleeves in an airtight container with some fresh silica gel packets enclosed within (Ewa Marine's 'CD5' are a very thirsty and reusable desiccant option).

Made by hand in the USA for the firearms industry, the sleeve's based on USA cotton treated with oil and silicone.  There's no need to oil carbon steel kept within; I've used it for a high carbon oldie that I never oil, and I live in a near-constant 70-75% relative humidity environment.  Not a drop of rust anywhere in >3 years.  That's very impressive.  In fact, the makers say to not oil 'em, as this can seal moisture under a film of oil.

This is an excellent, practical travel solution, too.

WARNING:  When you get it, the inner surfaces of this little sock sleeve are much more slippery than, say, a dry terry cloth towel.  It is not intended as a protection tomb from impact, and offers no protection from the laws of physics; this is only a tool to eliminate the risk of rust.  If you forget which end of the sleeve is the open end and expose that open end marginally more towards the center of our earth as opposed to away from it, it is very likely that the razor will fall out of it, possibly damaging you, the razor, or both.  Be careful carrying it around.  I myself have already made this stupid mistake once, but still wouldn't trade these things for the world.  One less thing to worry about.

Note:  $6 USA/Canada & $8 Int'l price is only required if making an order for 1 sleeve, all by its lonesome.  Combine purchase of a sleeve with anything else and use the $4.50 button.  Thanks!

The "Evide Sonnant Extra" is the least-expensive of Thiers- Issard's extra full hollow ground razors, known as their 'singing' razors.

They don't leave the factory until their edge is so thin honed that it rings with a high- pitched note should you pluck the blade.

Evide's got simple composite plastic handles, though the rigidity of the plastic itself is what I'd term the best in the modern EU productions...  But it is the impeccably ground blade that is the star here.

We (try to) stock the 6/8" models of the Evide Sonnant Extra razor in white or black handles.

The "Sheffield Silver Steel" are the step up in luxury of Thiers- Issard's extra full hollow ground 'singing' razors, the same geometric blade essentials as the "Evide Sonnant Extra" above but with fancier bladework, scales, etc..

Just like the razors above, they don't leave the factory until their edge is so thin honed that it rings with a high-pitched note should you pluck the blade.

Most of our stock of the Sheffield Silver Steel razor below is the 5/8" model, but some may be 6/8"; read the listings.

This version has olivewood scales from Sicily.  It weighs about 45 grams.
ACTUAL SAMPLES OF STOCK SHOWN BELOW

This version of the Sheffield Steel has ebony scales and a fancy 'wheat berry' sculpted back.  Weight is approximately 46 grams.
ACTUAL SAMPLE OF STOCK BELOW
Please note that Thiers is having huge backlogs right now, and we've no near hope for any more.

This version of the Sheffield Steel has red stamina scales and is a big 7/8" blade, with 'shoulderless' tang style and a square point.  Not a beginner's tool, as it is weighty for a singer and blocks a lot of vision, but an awesome blade for the accomplished!  Weight is approximately 56 grams.
ACTUAL SAMPLES OF STOCK SHOWN BELOW

The "Le Grelot" was a large (6/8" officially, and that much at least) 3/4-hollow ground beauty which gained notoriety amongst the wet-shaving community at breakneck speed.  Kind of a shame, then, that it is done, too; this razor was Thiers' efforts to grind some leftover 'blanks' from a long ago (pre-WWII) deceased competitor.  Thiers-Issard did a terrific job, but there's no more supply; all the "Le Grelot" razors have now been produced, and in short order they'll be scarce as hen's teeth.

After ~2yrs vending them, I finally gave a Le Grelot a shave on 1.31.11.  Wow; what a blade!  It is a heavy razor for sure, and recalling a common lament from my safety-first days preceding today's dedicated family man, your sense of touch might whine "I can't feel anything"...the Le Grelot's rather thick grind and meaty spine do not exactly transmit input to fingertips like 4/8" singing razors or a $2,000 turntable stylus.  That's okay, though; this thing shaves like no big razor I've ever used-big yet nimble, with closeness pretty much on par with my favored Evide Sonnant Extra.  I can't tell beginners Le Grelot's a great first razor, as it really is miles from being a tool to learn upon, but if you want a close shave from a large razor I've never tried anything similar.  Against the grain passes with the Le Grelot on the mustache area were effortless.  I use the same La Grosse Blanche coticule to finish all the remaining Le Grelot stocks.

There's some nice detail work on the tang and every Le Grelot gets lovely scales of some sort, but it will always be an understated razor when cast against some of the world's other ultra-premium models.

You'll see some varied numbers on the pieces in the images below; these numbers mean nothing in the modern sense, it was engraved that way from the deceased company.

Even cooler; they don't even know for sure exactly where the Le Grelot steel came from, only that it is exemplary.  It is most likely Sheffield steel from England.

Cocobolo's a well known C. America tropical hardwood that's pretty hard and retains a well-oiled look for a good long while.

Olneya tesota goes by desert ironwood to its friends, and from my high school days dabbling in woodworking, I'll attest that desert ironwood, if not earth's densest and hardest to work wood, is on the real short list of such things.  It was also damned expensive to buy scraps to malleate as I recall; it has a small habitat.  Desert Ironwood's beautiful and very distinct, with a bit of wavy feel on its surface that's kind of a hallmark of the breed.  Desert Ironwood's also dense, making this razor come in at a hefty ~66 grams.