This carrier is the best.  While it is "soft" in structure, it is very sturdy.  Granted I have a 10 pound cat.  I bought this because of the open sides and the top access.  It does have a front access, too.  The sherpa padding is also an added bonus.  Easy to assemble and easy to disassemble.  Only requires that the top two bars be placed together.  Really simple.  No tools or anything required.  And I love that it folds flat for storage.  The entire transaction with Wayfair was smooth.  Great price, reasonable shipping, and fast shipping, too.