Because it's hard to know when you're going to get a flat, it's always good to have extra tubes on hand. Specialized's Airlock Self-Sealing Tube seals small punctures so you can keep riding.

Because it's hard to know when you're going to get a flat, it's always good to have extra tubes on hand. Specialized's Thorn Resistant Tube is thicker on the road side for puncture protection and thinner on the rim side for weight savings.

Specialized's Desert Protection Tube defends against flats in the harshest environments. It's thicker on the road side for puncture protection and thinner on the rim side for weight savings, while the Airlock self-sealing solution fixes most flats on the spot and prevents slow leaks.

• ISO Diameter: 559 / 26" mtn • Tube Compound: Butyl • Valve: Standard Schrader • Valve Core: Removable • Valve Length: Schrader • Valve Shaft: Smooth • Weight: 102g (1-1.25), 165g (1.5-1.75), 174g (1.9-2.125), 198g (2.1-2.3), 281g (2.4-2.75)

• Low Lead Valve • ISO Diameter: 457 • ISO Width (mm): 44 mm • Labeled Size: 22 x 1.75 • Tube Compound: Butyl • Valve: Standard Schrader • Valve Core: Removable • Valve Length: Schrader • Valve Shaft: Smooth • Weight: 145 g

• 2.25mm wall thickness • ISO Diameter: 559 / 26" mtn • ISO Width (mm): 60 mm , 61 mm , 62 mm , 63 mm , 64 mm , 65 mm , 66 mm , 67 mm , 68 mm , 69 mm • Labeled Size: 26 x 2.4-2.75 • Tube Compound: Butyl • Valve: Standard Schrader • Valve Core: Removable • Valve Length: Schrader • Valve Shaft: Smooth • Weight: 694g

• ISO Diameter: 559 / 26" mtn • ISO Width (mm): 53 mm , 54 mm , 55 mm , 56 mm , 57 mm , 58 mm • Labeled Size: 26 x 2.1-2.3 • Tube Compound: Butyl • Valve: Presta • Valve Core: Removable • Valve Shaft: Threaded • Weight: 202g

• ISO Diameter: 340 , 349 / 16" recumbent • ISO Width (mm): 35 mm • Labeled Size: 16 x 1-3/8 • Tube Compound: Butyl • Valve: Presta • Valve Core: Removable • Valve Length: Short 32-40mm • Valve Shaft: Threaded • Weight: 84g

• ISO Diameter: 520 / 24" mini bmx • ISO Width (mm): 29 mm • Labeled Size: 24 x 1-1/8 • Tube Compound: Butyl • Valve: Presta • Valve Core: Removable • Valve Length: Short 32-40mm • Valve Shaft: Threaded • Weight: 92g

• ISO Diameter: 622 / road / 29" , 630 / 27" • ISO Width (mm): 48 mm , 49 mm , 50 mm , 51 mm , 52 mm , 53 mm , 54 mm • Labeled Size: 29 x 1.9-2.3 • Tube Compound: Butyl • Valve: Presta • Valve Core: Removable • Valve Shaft: Threaded • Weight: 176g (32mm), 178g (48mm)

Continental's Light Tubes are made of a lightweight seamless butyl rubber and are individually tested for top quality. These tubes are lighter than standard ones to make your tires feel more supple and accelerate even faster.

Continental tubes are made of seamless butyl rubber and are individually tested for top quality.

Continental Cross Tubes are made of seamless butyl rubber and are individually tested for top quality. They're also heavier duty than standard tubes and perfect for the rough-and-tumble world that is cyclocross.

Giant's inner tubes are made from high-quality, standard weight rubber so you can keep on rolling.

Continental Light Tubes are made of a lightweight seamless butyl rubber and are individually tested for top quality. These tubes are nearly 30% lighter than standard tubes to make your tires more supple and help your wheels accelerate even faster.

Giant's thorn tubes use thicker rubber to prevent some flats and punctures.

This tube features high-density rubber for fewer flats.

Giant's downhill tubes are super burly to withstand all the DH abuse you can dish out.

Giant's inner tubes are made from high-quality, standard weight rubber so you can keep on rolling.

Giant's thorn tubes feature thicker rubber that prevents some punctures and flats.

Never leave home without a spare tube. Vittoria's Ultralite inner tubes shave grams and, if you flat in no man's land, will save your ride. - Butyl tube - 51mm valve stem with removable core

When building your featherweight dream bike, don't forget the tubes! MICHELIN's Aircomp Ultralight tubes are nearly weightless for minimum rolling resistance and maximum speed.

When building your featherweight dream bike, don't forget the tubes! Michelin's Aircomp Ultralight tubes are nearly weightless for minimum rolling resistance and maximum speed.

• ISO Diameter: 571 / 650c • ISO Width (mm): 18 mm , 19 mm , 20 mm , 21 mm , 22 mm , 23 mm • Labeled Size: 650c x 18-23 • Tube Compound: Butyl • Valve: Presta • Valve Core: Removable • Valve Shaft: Threaded • Weight: 80g (32mm), 86g (48m & 60mm), 88g (80mm)

• ISO Diameter: 622 / road / 29" • ISO Width (mm): 18 mm , 19 mm , 20 mm , 21 mm , 22 mm , 23 mm • Labeled Size: 700c x 18-23 • Tube Compound: Butyl • Valve: Presta • Valve Core: Removable • Valve Shaft: Threaded • Weight: 80g (32mm), 84g (48mm & 60mm), 88g (80mm)

• ISO Diameter: 438 , 451/ 20 x 1-1/8", 20 x 1-1/8" • ISO Width (mm): 28 mm , 29 mm , 30 mm , 31 mm , 32 mm , 33 mm , 34 mm • Labeled Size: 20 x 1-1/8 - 1-3/8 • Tube Compound: Butyl • Valve: Presta • Valve Core: Removable • Valve Shaft: Threaded • Weight: 98g

• ISO Diameter: 559 / 26" mtn • ISO Width (mm): 48 mm , 49 mm , 50 mm , 51 mm , 52 mm , 53 mm , 54 mm • Labeled Size: 26 x 1.9-2.125 • Tube Compound: Butyl • Valve: Presta • Valve Core: Removable • Valve Shaft: Threaded • Weight: 146g (32mm), 148g (48mm), 150g (60mm)

• Low Lead Valve • ISO Diameter: 305 / 16" BMX • Tube Compound: Butyl • Valve: Standard Schrader • Valve Core: Removable • Valve Length: Schrader • Valve Shaft: Smooth • Weight: 76g (1.25-1.5), 92g (1.5-1.75), 102g (1.75-2.125)

• 4mm wall thickness in the tread area and 2mm in the rim area • ISO Diameter: 559 / 26" mtn , 584 / 650b / 27.5" • Tube Compound: Butyl • Valve: Standard Schrader • Valve Core: Removable • Valve Length: Schrader • Valve Shaft: Smooth • Weight: 452g (1.5-1.75), 642g (1.9-2.125)

• 4mm wall thickness in the tread area and 2mm in the rim area • ISO Diameter: 559 / 26" mtn , 584 / 650b / 27.5" • Tube Compound: Butyl • Valve: Presta • Valve Core: Removable • Valve Length: Short 32-40mm • Valve Shaft: Threaded • Weight: 468g (1.5-1.75), 536g (1.9-2.125)