Labels such as 1/1 and 2/2 describe shaft and butt compartments, not case quality. Choose capacity for your actual cue set, travel routine and accessory load.
Understanding capacity
A 1/1 case holds one cue split into two pieces. A 2/2 case provides two shaft and two butt tubes, but compartment lengths vary by maker. Measure each part from joint to end and leave a little clearance so the tip is not compressed.
Tube or soft case
A hard tube protects better from baggage impacts; a soft case is lighter for everyday trips. Check the lining, retainers, zip water resistance and strap balance.
Pockets and air travel
Accessory pockets should fit chalk, a glove, tools and an extension. Keep heavy metal away from a shaft unless a divider separates it. For flights, use a reinforced model and the maker's protective packaging.
Before ordering, verify compartment diameter and extension compatibility, not just the number of tubes.