I did run into difficulty assembling the crate. One of the latches you have to undo to put the "wall" up was truly nearly impossible to unlatch. It was grueling but after about 15 minutes worth of painful attempts I managed it. Hopefully this was just a flaw in mine and no one else will have that problem.. or they'll figure out how to undo the latch with a tool.
Addendum added January 28, 2013: My vet had never noticed these carriers because I had never put one up on the exam table until my last vet visit. She looked at it with interest and totally concurred with my opinion of having a small, but open carrier for my two (panicky) cats. She has seen more than a few overheated pets in too enclosed carriers. Since I live far from the vet I always carry spare towels for the bottoms of the carriers and she found that the "stable floor covering'* I use was an additional comfort feature for my pets long trip to their appointments. (I just ordered the larger size of this carrier for my "Phat Kat" and will donate her previous carrier to our local animal shelter.)
It is always wisest to purchase a crate that will last for your dog’s entire life, rather than buying a small one when she’s a puppy and increasingly larger crates as she grows. Instead, go ahead and buy a crate that is suitable for her adult size and use dividers to temporarily shrink the size of the interior. As she grows, you can remove the divider to provide access to the entire crate.
Update: We traveled quite a bit this holiday season and this portable crate was absolutely awesome! I have seen some reviews about bad zippers but suspect it's due to misuse. You have to raise each side before zipping it -- just common sense, people. Otherwise, there is too much pressure on the zipper. I think zippers on this crate are sturdy. Another suggestion is placing your dog's favorite bed inside. The crate (we have extra large) has plenty of room to add an extra large fluffy dog bed our dog loves. Because the crate folds flat, we place the crate in the cargo area and cover it with dog's bed when on the road. The dog sprawls like a queen! :) When we get to the destination, we unfold the crate, throw the bed inside, and voila -- cozy house that ... full review
Understand that little puppies need to 'go' about every 2-4 hours. On a schedule, (such as after feeding, before bedtime, first thing in morning) let your puppy out, teach him the route to the door, praise him at the door and take him out to the part of the yard you want him to use. Very quickly you are teaching him an elimination schedule that will stay with him for the rest of his life.
Product Description: These premium quality Dkeli Metal Pet Crates are crafted using commercial-quality materials and superior manufacturing. They are built for long-lasting durability and security using an all-steel, high tensile-strength wire that is securely formed and welded into a tight mesh pattern. The crates feature multiple doors that lock easily with a slide-bolt latch. Finished with a durable black Electro-coat finish, these crates are rust, corrosion, and fade resistant even in extreme climates. To set-up, simply unbox and fold open; no tools are required. Each crate features a lightweight, slide-out tray made of durable ABS plastic. The tray features a lip around the perimeter and is held in place with a retaining bar making it easy to remove and clean without needing to open.