highly recommend the semi-pneumatic wheels
Your review: The semi-pneumatic tires are a huge plus over pneumatic tires. Our lab has purchased 2 other carts of similar construction but with pneumatic tires. The pneumatic tires require frequent inflation; we even had to replace one tube. The semi-pneumatic tires of this cart roll very easily and eliminate these headaches.
Pros: Sturdy construction, covered shelves, semi-pneumatic tires
Cons: A little pricey but cost is comparable with similar carts