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Two tubes, from a manufacturer that makes its own rubber

Continental MTB Tube 29", 47/62-622, Presta, 2-pack

A pair of Continental MTB tubes for 29-inch wheels, covering 47 to 62 mm (1.85 to 2.44 in) tire widths on a Presta valve.

Two Continental MTB inner tubes for 29-inch wheels

Continental MTB Tube 29", 47/62-622, Presta, 2-pack

A pair of Continental MTB tubes for 29-inch wheels, covering 47 to 62 mm (1.85 to 2.44 in) tire widths on a Presta valve.

ETRTO range
47-622 to 62-622
Wheel size
29 inch
Valve
Presta
Quantity
2 tubes
Amazon reference
B00O7W44P4 (identical on 6 markets)
EAN
4251056611467
  • Two tubes, so one goes in the wheel and one in the saddle bag
  • Rank 241, and from a manufacturer that makes its own compounds
  • Presta only — check your rim drilling

Best for: A 29-inch mountain bike, buying the spare at the same time as the replacement.

≈ $42
Check price on Amazon

Specifications

ETRTO range
47-622 to 62-622
Wheel size
29 inch
Valve
Presta
Quantity
2 tubes
Amazon reference
B00O7W44P4 (identical on 6 markets)
EAN
4251056611467

Continental makes its own rubber compounds, and this is its mountain bike tube in a two-pack.

What the manufacturer publishes

Two Continental MTB tubes for 29-inch wheels, covering ETRTO 47-622 to 62-622. A Presta valve. Suitability stated for mountain bike tires.

The 622 mm (24.5 in) coincidence worth knowing

A 29-inch mountain bike wheel and a 700C road wheel are both 622 mm (24.5 in). Same rim diameter, completely different tires. That is why a road tube and a mountain bike tube share the second ETRTO number and are not interchangeable — the width range is what separates them.

Buying two

The spare in your saddle bag is only useful if it matches the tires currently on the bike. Buying a pair at the same time means it does, and it removes the most common failure in a roadside repair: a spare tube bought for a wheel you no longer own.

The valve

Presta, the narrow one with a lock nut at the tip. Check what your rim is drilled for — a Presta tube in a Schrader-drilled rim needs a grommet to stop it rattling and tearing.

Availability

Read on the day this page was built: $42 at the American Amazon shop.

Read from Keepa on the day this page was last revised; stock and price both move without notice.

Prices quoted in this text were read on 2026-08-30. The live price is at the top of the page.

The questions riders ask

Does 29-inch mean the same as 700C?

The rim diameter is the same — both are 622 mm (24.5 in). The difference is tire width: a 29-inch mountain bike tire and a 700x25C road tire sit on the same rim diameter and need different tubes.

Why buy two?

One goes in the wheel, one lives in the saddle bag. A spare tube that matches your tires is the single most useful thing to carry, and buying the pair means the spare actually matches.

More inner tubes

  • Fischer bicycle inner tube in its packaging showing the ETRTO size

    Fischer Inner tube, ETRTO 40/62-559, Schrader

    An inner tube covering ETRTO 40/62-559 on a Schrader valve, elastic enough to span a 22 millimeter width range.

    ETRTO size
    40/62-559
    Valve
    Schrader (AV)
    Material
    Elastic butyl, covering several tire sizes
    Amazon reference
    B01LD96YKQ (identical on 6 markets)
    EAN
    4008153850974
    • A published ETRTO range covering 40 to 62 mm (1.57 to 2.44 in) on 559 mm (22 in) rims — most 26-inch mountain bikes
    • Rank 397, and the cheapest tube of the European listings on this site
    • Schrader valve only in this reference — check what your rim is drilled for

    Best for: A 26-inch mountain bike or city bike with a Schrader valve, as a spare or a replacement.

    ≈ $26
    Check price on Amazon
  • Loxan 14 inch inner tubes with angled valve stems for electric scooters

    Loxan 14" × 2.125, ETRTO 57-254, angled valve

    Two 14 × 2.125 tubes with angled valve stems for 14-inch electric scooters and e-bikes, ETRTO 57-254.

    ETRTO
    57-254
    Inch size
    14 × 2.125
    Valve
    Angled stem — type not stated
    Contents
    2 tubes
    Suits
    14-inch electric scooters, e-bikes, electric bicycles
    Explicitly excluded
    12-inch wheels
    Material
    Not published
    Weight
    Not published
    Valve angle
    Not published
    Amazon reference
    B0CSD1932W
    EAN
    0606993877157
    • Publishes the ETRTO pair, 57-254, and asks you to check the sidewall
    • States what it does NOT fit, which almost no listing does
    • Does not state whether the valve is Schrader or Presta

    Best for: A 14-inch electric scooter or small e-bike, once the valve type is confirmed

    Check price on Amazon
  • Slime self-sealing bicycle inner tube in its packaging

    Slime 26" self-sealing, Schrader

    A 26-inch Schrader tube with sealant already inside, stated to seal punctures up to 3 mm (0.12 in) and to keep working for two years.

    Size
    26" × 1.75-2.125 — inch sizes only
    Valve
    Schrader
    Sealant
    Pre-filled, Fibro-Seal
    Seals punctures to
    1/8" (3 mm (0.12 in))
    Stated life
    2 years
    Weight
    644 g (22.7 oz) — the heaviest in this group
    Sealant properties
    Non-toxic, non-corrosive, non-flammable, water soluble
    Also sold for
    Wheelbarrows, wheelchairs, strollers, snow blowers
    ETRTO
    Not published
    Topping up
    Not addressed
    Amazon reference
    B071RVYZR4
    EAN
    0716281507519
    • Seals punctures up to 3 mm (0.12 in) without stopping, which no other tube here does
    • A published figure for what it seals, not just a claim that it seals
    • 644 g (22.7 oz), roughly half a kilo more than a plain tube on the same wheel

    Best for: A commuter, cargo or utility bike where a roadside repair is the real cost

    Check price on Amazon

Elsewhere in the spares drawer

  • Fincci 700x35c tires with reflective sidewall stripes

    Fincci 700x35c pair, 37-622, 425 g (15 oz)

    A pair of 700x35c tires at 425 g (15 oz) each with a 1 mm (0.04 in) nylon puncture layer, Kevlar bead and reflective sidewalls for commuting.

    ETRTO size
    37-622 (700x35c)
    Quantity
    2 tires
    Weight
    425 g (15 oz) each
    Protection
    1 mm (0.04 in) nylon layer
    Bead
    Kevlar folding
    Visibility
    Reflective sidewalls
    Amazon reference
    B0BPSK6YV1 (identical on 6 markets)
    EAN
    5060567314274
    • Reflective sidewalls, which make a rider visible from the side at junctions
    • A pair, with weight and protection thickness both published
    • Four hundred and twenty-five grams each is heavy for the size

    Best for: Commuting on mixed surfaces where being seen from the side matters as much as grip.

    ≈ $49
    Check price on Amazon
  • Fincci 700x38c folding gravel bike tires with inner tubes

    Fincci 700×38c pair + 2 tubes, 40-622, 450 g (15.9 oz)

    A set of two folding 700×38c gravel tires with two butyl tubes, publishing casing, belt, tread depth, pressure and load.

    ETRTO
    40-622
    Size
    700×38c
    Contents
    2 tires and 2 butyl tubes
    Bead
    Folding aramid
    Casing
    60 TPI nylon and rubber
    Anti-puncture belt
    1 mm (0.04 in), between tread and casing
    Tread depth
    1.5 mm (0.06 in)
    Pressure
    50–80 PSI
    Load per tire
    80 kg (176 lb)
    Weight
    About 450 g (15.9 oz) a tire
    Tube valve
    Schrader — check your rim drilling
    Tubeless
    Not stated — clincher
    Amazon reference
    B0DJVZ47HH
    EAN
    5060567315332
    • Publishes seven figures, more than any other tire on this page
    • A load rating of 80 kg (176.4 lb) a tire, which almost no bicycle tire gives
    • The tubes are Schrader, and most 700C rims are drilled for Presta

    Best for: A gravel or hybrid bike on hardpack and towpath, re-shod in one purchase

    Check price on Amazon
  • Kenda AMRAK 27.5 inch mountain bike tire with evenly spaced knobs

    Kenda AMRAK 27.5×2.2, 30 TPI, wire bead

    A budget all-mountain tire in 27.5 × 2.2 on a wire bead, with a 30 TPI casing and an evenly spaced knob pattern.

    Size
    27.5 × 2.2 (about 56-584)
    Casing
    30 TPI — the coarsest in this survey
    Bead
    Wire
    Tread
    Evenly spaced knobs, no fast center
    Use
    All-mountain and gravel
    Compound
    "Affordable yet high-performance" — unnamed
    ETRTO
    Not published
    Weight
    Not published
    Pressure range
    Not published
    Puncture protection
    None named, anywhere
    Amazon reference
    B083ZLQN2W
    EAN
    0047853650464
    • Publishes its TPI, which three tires on this page do not
    • An even knob pattern behaves the same upright and leant over
    • Thirty TPI is the coarsest casing here, so it rolls slowly

    Best for: A 27.5-inch hardtail on a budget, ridden on loose ground rather than tarmac

    Check price on Amazon

All inner tubes