The kit (which comes with a metallic, faux-leather case) includes blush, angled eye shadow, eye sweep, and eyeliner brushes that are built to last. Now if Bobbi would just add a concealer and eyebrow brushes in the mix, you'd have pretty much all the brush basics covered.
The problem with travel-sized makeup brushes is that they're either too flimsy to do anything of worth, or they're so tiny, they just don't stack up to the effectiveness of their full-sized counterparts. Not so with the four brushes contained within Bobbi Brown's Desert Twilight mini brush set ($55). The reason is because these brush heads are closer to full-sized, making it easier to pick up, distribute, and blend everything from your blushes to eyeliners. (It's actually the handles that put the mini in these minimakeup application tools.)