Arundel Dual Seatbag Blue, One Size

I purchased this bag in November 2015 and use it to carry two 700 x 25 road tubes, two CO2 canisters and two tyre levers.At the time of purchase I thought that I was taking a chance, as some reviewers spoke of bag retention issues, but I have had no problems over 14,000 miles of road cycling, often on quite rough roads.I love the bag’s profile – there’s no strap to rub against your shorts, it sits elegantly beneath your saddle and even when full it’s minimal enough so that you won't know it's there – it has, on occasion, been inadvertently left at home after being removed to wash the bike and failing to notice that I’ve not replaced it.The material where the short strap is attached has begun to wear through, so I'll be purchasing a replacement soon.

Perfect for my needs. Just big enough for two tubes plus two CO2 cartridges and the release valve.

This a great bag in looks and functionality. But it has a fatal flaw. The strap is not secure enough and you’ll eventually lose the bag on the road. I lost mine with over $100 worth of spares.Instead, buy the newer model Aundel Medio. It has the same shape and functionality, but a mix more secure 1.5inch Velcro strap.

This is perfect for carrying a couple of road tubes (will only fit a single mountain bike tube), a couple of CO2 cartridges and inflator, a multitool and Wolf tooth pack pliers. Yes, I can squeeze all of that in one of these bags. I have one of these on each of my bikes.