Messenger-Style 

A messenger bag is distinct from a backpack or briefcase-style laptop case in that it has one long shoulder strap. This ensures a more comfortable and secure way of carrying it as well as easy access to the contents of the bag. It's also a great way to look urban and on-the-go and it's easy to open up if you're travelling  and have to deal with airport security. Drawbacks? Many messenger bags may be too sporty for some workplaces, and depending on how heavy your laptop is, you could experience strain in the shoulders and neck. Still, it's a versatile option that may be the right look and fit for casual professionals and students alike. 

Leather ,Handheld ,Saddle-Bag , or Leather Sleeve 

Leather is the standard option for the professional workplace, whether it's used for shoes, belts, bags, briefcases and, of course, laptop bags. They come in a variety of shapes, sizes, and carrying options (hand or shoulder), but at their most basic, they must be capable of containing a laptop. This means they have sturdy construction and possibly some interior straps to hold the device in place.

Looking refined has its drawbacks: leather cases  will not be as durable as, say, a canvas messenger bag, and you'll have to look out for scratches and rainy weather. Still, assuming you take a car to work and not the tube, a bus, or a bike, keeping your case (as well as your laptop) in good shape will probably not be too big a deal.

Laptop Bag 

Women everywhere, rejoice! Laptop cases can sometimes seem like a bit of a man's world, what with all the heavy duty zips, orange canvas, and wide straps. There's just something so unsatisfying about dressing in your finest corporate apparel (or your favourite jeans and kitten heels) and pairing it all with something bulky and utilitarian. Thanks to a few savvy designers, however, ladies with laptops can be well equipped and well dressed at the same time. Some are so on trend that you'll mistake them for this season's leather bags . There are also a variety of styles that range from fun and colourful to the serious and polished, so stylish bags  are available for the secondary school student and professional woman alike. 

Wheeled Laptop Cases 

These are a little more expensive than the other options we've covered, but if you carry your desk on your back, these are definitely worth the cost. They often have enough room to pack books, lunch, and a sunhat  or change of clothes, so you'll always be prepared--and you won't kill your shoulders. Avoid the temptation to overload these bags and they will last you a very long while. Wheeled cases are an ideal packing solution for techie freelancers who need to tote their gear, or those folks who enjoy a little weekend holiday  mixed in with their more extensive travels.

Backpacks  are comfortable, versatile, and unisex. Generally, they're the default for lugging your laptop if you just want to get from point A to point B. Try not to skimp by getting just a regular backpack--look for one with padding (especially on the bottom) and a way of securing the laptop inside (either with straps or a special compartment) to minimize movement. Fortunately, the straps or padded pocket areas of these bags are often adjustable, making it easier to fit your laptop in without too much fuss. These may be ideal for students, who will need space for books and other supplies, too.

Though not a true bag or case, a laptop sleeve  or pillow  is still incredibly useful. They can be used to protect and even disguise a laptop  when travelling short distances, or to store them around the house safely. They can also add a layer of protection to bag-bound laptops, should you be in jostle-prone environments (leather briefcases in particular could stand for more protective padding). They're a great add-on accessory, so long as you have no need for peripherals like a wireless mouse  or other USB-powered devices .

Laptop Computers

Backpacks

Luggage

Wireless Adapters

Cable DSL Routers

Software

External Hard Drives

MP3 Players

PDAs