Putting your nutrition, energy bars and other essentials front and centre, the Belly S Top Tube Bag is a brilliantly sized and conveniently placed carrier for when you require a much need energy boost on your ride. Attaching to your top tube via the adjustable Velcro mounting strap, the Belly S Top Tube Bag is big enough to hold necessary edibles and gels, but small enough not to be a distraction. Constructed of a water-repellent polyester fabric, it will keep your goodies bone dry in any weather.Featuring a roll down closure for easy opening and open side pocket (with reflective Birzman logo detail) for quick access to your mobile or snacks, plus a rain cover for extreme rainfall protection, the Belly S Top Tube Bag is literally out in front when it comes to Birzman\'s bike mounting bags. Specification: Material: 300D Polyester (water repellent)., Size: 18 x 6 x 4.5cm..