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Internal Frame Backpacks

(196 products)
Products (196)
Remove frame-type filter:Internal Frame
Sort: Best Match
    Top Rated
    GregoryKatmai 65 Pack - Closeout - Men's Plus Sizes
    $215.73
    Save 30%
    compared to  $309.95
    16 reviews with an average rating of 4.9 out of 5 stars
    Trip Length/Capacity:
    Multiday
    Gear Capacity:
    60 liters
    Weight:
    5 lbs
    Features:
    Reservoir Compatible
    REI OUTLET
    OspreyRaptor Pro 18 Hydration Pack - Men's
    $153.73
    Save 45%
    compared to  $280.00
    4 reviews with an average rating of 4.0 out of 5 stars
    Gear Capacity:
    18 liters
    Liquid Capacity:
    2.5 liters
    Weight:
    3.31 lbs
    Features:
    Hipbelt Pockets
    REI OUTLET
    Top Rated
    OspreyManta 34 Hydration Pack - Men's
    $240.00
    7 reviews with an average rating of 5.0 out of 5 stars
    Gear Capacity:
    34 liters
    Liquid Capacity:
    2.5 liters
    Weight:
    3.54 lbs
    Features:
    Hipbelt Pockets
    Raincover Included
  • Sale Ends May 25
    GregoryMaven 48 Pack - Women's
    $209.89
    Save 25%
    compared to  $279.95
    2 reviews with an average rating of 5.0 out of 5 stars
    Trip Length/Capacity:
    Weekend
    Gear Capacity:
    44 to 48 liters
    Weight:
    3.12 to 3.2 lbs
    Features:
    Reservoir Compatible
    Only at REI
    DeuterAircontact Core 45 + 10 SL Pack - Women's
    $280.00
    0 reviews
    Trip Length/Capacity:
    Multiday
    Gear Capacity:
    55 liters
    Weight:
    4.75 lbs
    Features:
    Reservoir Compatible
    NEMOResolve 35 L Endless Promise Technical Active Pack - Men's
    $152.73
    Save 30%
    compared to  $219.95
    2 reviews with an average rating of 4.5 out of 5 stars
    Gear Capacity:
    37.5 liters
    Weight:
    2.89 lbs
    Features:
    Reservoir Compatible
    REI OUTLET
    Top Rated
    OspreyKyte 48 Pack - Women's
    $240.00
    23 reviews with an average rating of 4.6 out of 5 stars
    Trip Length/Capacity:
    Weekend
    Gear Capacity:
    46 to 48 liters
    Weight:
    4 to 4.25 lbs
    Features:
    Reservoir Compatible
    Raincover Included
    GregoryKalmia 60 Pack - Closeout - Women's
    $215.73
    Save 30%
    compared to  $309.95
    4 reviews with an average rating of 5.0 out of 5 stars
    Trip Length/Capacity:
    Multiday
    Gear Capacity:
    55 to 60 liters
    Weight:
    4.41 to 4.48 lbs
    Features:
    Reservoir Compatible
    REI OUTLET
    OspreyDownburst 34 Pack
    $239.73
    Save 25%
    compared to  $320.00
    3 reviews with an average rating of 4.7 out of 5 stars
    Gear Capacity:
    34 liters
    Weight:
    3.27 lbs
    Features:
    Reservoir Compatible
    REI OUTLET
    GregorySalvo 8 H2O Hydration Pack
    $75.73
    Save 45%
    compared to  $139.95
    2 reviews with an average rating of 4.0 out of 5 stars
    Gear Capacity:
    8 liters
    Liquid Capacity:
    3 liters
    Weight:
    1.78 lbs
    Features:
    Hipbelt Pockets
    REI OUTLET
    Top Rated
    GregoryKatmai 65 Pack - Men's
    $231.73
    Save 25%
    compared to  $309.95
    10 reviews with an average rating of 5.0 out of 5 stars
    Trip Length/Capacity:
    Multiday
    Gear Capacity:
    65 liters
    Weight:
    4.68 lbs
    Features:
    Reservoir Compatible
    REI OUTLET
    Top Rated
    GregoryBaltoro 75 Pack - Men's
    $399.95
    8 reviews with an average rating of 5.0 out of 5 stars
    Trip Length/Capacity:
    Extended, Multiday
    Gear Capacity:
    70 to 80 liters
    Weight:
    4.83 to 5.36 lbs
    Features:
    Reservoir Compatible
    Mountain HardwearPCT 65 L Pack - Women's
    $209.73
    Save 30%
    compared to  $300.00
    15 reviews with an average rating of 4.5 out of 5 stars
    Trip Length/Capacity:
    Multiday
    Gear Capacity:
    65 liters
    Weight:
    4.16 lbs
    Features:
    Reservoir Compatible
    REI OUTLET
    GregoryZulu 20 LT Pack - Men's
    $110.73
    Save 30%
    compared to  $159.95
    1 reviews with an average rating of 5.0 out of 5 stars
    Gear Capacity:
    20 liters
    Weight:
    2.23 lbs
    Features:
    Reservoir Compatible
    REI OUTLET
  • Sale Ends May 25
    Top Rated
    NEMOPersist 45 L Endless Promise All-Adventure Pack - Men's
    $194.89
    Save 25%
    compared to  $259.95
    18 reviews with an average rating of 4.7 out of 5 stars
    Trip Length/Capacity:
    Weekend
    Gear Capacity:
    44 liters
    Weight:
    3.7 lbs
    Features:
    Reservoir Compatible
    GregorySalvo 16 H20 Hydration Pack - Men's
    $81.73
    Save 45%
    compared to  $149.95
    2 reviews with an average rating of 5.0 out of 5 stars
    Gear Capacity:
    16 liters
    Liquid Capacity:
    3 liters
    Weight:
    1.82 lbs
    Features:
    Hipbelt Pockets
    REI OUTLET
    DeuterTrail 18 Pack - Men's
    $83.93
    Save 30%
    compared to  $120.00
    2 reviews with an average rating of 5.0 out of 5 stars
    Gear Capacity:
    18 liters
    Weight:
    2.19 lbs
    Features:
    Reservoir Compatible
    Raincover Included
    Top Rated
    OspreyKyte 38 Pack - Women's
    $220.00
    24 reviews with an average rating of 4.9 out of 5 stars
    Gear Capacity:
    36 to 38 liters
    Weight:
    3.88 to 4.06 lbs
    Features:
    Reservoir Compatible
    Raincover Included
    OspreyDownburst 36 Pack
    $239.73
    Save 25%
    compared to  $320.00
    4 reviews with an average rating of 4.5 out of 5 stars
    Gear Capacity:
    36 liters
    Weight:
    4.84 lbs
    Features:
    Reservoir Compatible
    REI OUTLET
  • Sale Ends May 25
    Top Rated
    NEMOPersist 30 L Endless Promise All-Adventure Pack - Men's
    $172.39
    Save 25%
    compared to  $229.95
    19 reviews with an average rating of 4.9 out of 5 stars
    Gear Capacity:
    31 liters
    Weight:
    3.2 lbs
    Features:
    Reservoir Compatible
    OspreyAether Plus 85 Pack - Men's
    $480.00
    27 reviews with an average rating of 4.3 out of 5 stars
    Trip Length/Capacity:
    Extended
    Gear Capacity:
    83 to 85 liters
    Weight:
    6.08 to 6.35 lbs
    Features:
    Reservoir Compatible
    Raincover Included
    Top Rated
    Mountain HardwearAMG 105 Pack
    $490.00
    27 reviews with an average rating of 4.6 out of 5 stars
    Trip Length/Capacity:
    Extended
    Gear Capacity:
    105 to 109 liters
    Weight:
    5.13 to 5.24 lbs
    Features:
    Reservoir Compatible
    GregorySalvo 8 H2O Hydration Pack - Men's
    $89.73
    Save 35%
    compared to  $139.95
    2 reviews with an average rating of 4.0 out of 5 stars
    Gear Capacity:
    8 liters
    Liquid Capacity:
    3 liters
    Weight:
    1.78 lbs
    Features:
    Hipbelt Pockets
    REI OUTLET
    Top Rated
    OspreyAether Plus 70 Pack - Men's
    $450.00
    31 reviews with an average rating of 4.8 out of 5 stars
    Trip Length/Capacity:
    Multiday, Extended
    Gear Capacity:
    68 to 70 liters
    Weight:
    5.61 to 6.17 lbs
    Features:
    Reservoir Compatible
    Raincover Included
  • Sale Ends May 25
    NEMOPersist 30 L Endless Promise All-Adventure Pack - Women's
    $172.39
    Save 25%
    compared to  $229.95
    4 reviews with an average rating of 4.8 out of 5 stars
    Gear Capacity:
    30 liters
    Weight:
    3.07 lbs
    Features:
    Reservoir Compatible
    ALPS MountaineeringExpedition 75 Pack
    $187.73
    Save 30%
    compared to  $269.99
    0 reviews
    Trip Length/Capacity:
    Extended, Multiday
    Gear Capacity:
    75 liters
    Weight:
    5.56 lbs
    Features:
    Reservoir Compatible
    Raincover Included
    REI OUTLET
    GregoryJuno 30 Pack - Women's
    $110.73
    Save 30%
    compared to  $159.95
    4 reviews with an average rating of 3.8 out of 5 stars
    Gear Capacity:
    30 liters
    Weight:
    2.06 lbs
    Features:
    Reservoir Compatible
    REI OUTLET
  • Sale Ends May 25
    ExpedLightning 50 L Pack
    $202.39
    Save 25%
    compared to  $269.95
    3 reviews with an average rating of 4.7 out of 5 stars
    Trip Length/Capacity:
    Weekend, Multiday
    Gear Capacity:
    50 liters
    Weight:
    2.6 to 2.65 lbs
    Features:
    Ultralight
    Reservoir Compatible
  • Sale Ends May 25
    Top Rated
    GraylMission EXP 35 Pack
    $239.89
    Save 25%
    compared to  $319.95
    15 reviews with an average rating of 4.6 out of 5 stars
    Gear Capacity:
    35 liters
    Weight:
    4.74 lbs
    Features:
    Reservoir Compatible
    Top Rated
    GregoryKalmia 60 Pack - Closeout - Women's Plus Sizes
    $215.73
    Save 30%
    compared to  $309.95
    32 reviews with an average rating of 4.9 out of 5 stars
    Trip Length/Capacity:
    Multiday
    Gear Capacity:
    55 to 60 liters
    Weight:
    4.7 to 4.78 lbs
    Features:
    Reservoir Compatible
    REI OUTLET
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