DS is going on a 5 day residential. Never been one one before as the overnight was cancelled due to Covid. What size bag is suitable? I was thinking a duffel type with backpack straps as I don't know if there's e.g. gravel from the bus to the hostel.
He needs to take sleeping bag, bed sheet, towel etc, slippers and trainers, clothes for warm and cold weather, sports clothes for outdoors, rain gear etc etc.
Finding it hard to judge from online what size he needs. I imaging slippers and trainers will take up a large space (size 44!) plus sleeping bag. Will 30litre be too small? 50L?