The Baby Bjorn is great early on until the baby is about 6 months old. The mesh is soft but fairly breathable. Definitely want to use a front pack until they are really good at holding their head stable.
At 6 months or so, the frame packs are the way to go even though they are a bit bulky. There are pros and cons for each brand, but my personal favorite is the Sherpani packs. I also tried the Kelty and the Deuter packs, but the Sherpani was the best overall, especially for longer hikes. The best thing about the Sherpani is how close it holds the baby to you. You would be surprised at how much of a difference that makes.
2005 Toyota Tacoma TRD Off-Road
Aluminess Front Bumper, OME Suspension, All-Pro UCA's, Hankook MT's on Painted MT Classic Locks, Century Topper, Custom Bed Platform, Thule Roof Rack System, and a few other mods.
2008 Adventure Trailers Horizon