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Internal Frame Backpacks

(256 products)
Products (256)
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    Hyperlite Mountain GearSouthwest 40 Pack
    $349.00 - $369.00
    33 reviews with an average rating of 4.2 out of 5 stars
    Trip Length/Capacity:
    Weekend
    Gear Capacity:
    40 liters
    Weight:
    2.03 to 2.18 lbs
    Features:
    Ultralight
    Reservoir Compatible
    GregoryKalmia 60 Pack - 2024 - Women's
    $231.73
    Save 25%
    compared to  $309.95
    2 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
    OspreyExos Pro 55 Pack - Men's
    $320.00
    33 reviews with an average rating of 4.1 out of 5 stars
    Trip Length/Capacity:
    Multiday
    Gear Capacity:
    55 to 58 liters
    Weight:
    2.08 to 2.16 lbs
    Features:
    Reservoir Compatible
    New arrival
    Hyperlite Mountain GearSouthwest 55 Pack
    $399.00
    0 reviews
    Trip Length/Capacity:
    Multiday
    Gear Capacity:
    55 liters
    Weight:
    1.86 to 2.04 lbs
    Features:
    Ultralight
    Reservoir Compatible
    Top Rated
    GregoryArrio 18 Pack
    $67.73
    Save 24%
    compared to  $89.95
    10 reviews with an average rating of 4.5 out of 5 stars
    Gear Capacity:
    18 liters
    Weight:
    1.39 lbs
    Features:
    Reservoir Compatible
    REI OUTLET
    Top Rated
    DeuterAircontact Core 65 + 10 Pack - Men's
    $260.00
    45 reviews with an average rating of 4.6 out of 5 stars
    Trip Length/Capacity:
    Extended, Multiday
    Gear Capacity:
    75 liters
    Weight:
    4.96 lbs
    Features:
    Reservoir Compatible
    DeuterAircontact Core 45 + 10 SL Pack - Women's
    $240.00
    26 reviews with an average rating of 4.4 out of 5 stars
    Trip Length/Capacity:
    Multiday
    Gear Capacity:
    55 liters
    Weight:
    4.31 lbs
    Features:
    Reservoir Compatible
    GregoryZulu 45 Pack - Men's
    $229.95
    35 reviews with an average rating of 4.1 out of 5 stars
    Trip Length/Capacity:
    Weekend
    Gear Capacity:
    43 to 45 liters
    Weight:
    3.52 to 3.71 lbs
    Features:
    Reservoir Compatible
    Top Rated
    OspreyKyte 38 Pack - Women's
    $210.00
    19 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
    GregoryParagon 60 Pack - Men's
    $299.95
    1 reviews with an average rating of 5.0 out of 5 stars
    Trip Length/Capacity:
    Multiday
    Gear Capacity:
    56 to 60 liters
    Weight:
    3.53 to 3.73 lbs
    Features:
    Reservoir Compatible
    OspreyKestrel 48 Pack - Men's
    $230.00
    21 reviews with an average rating of 4.5 out of 5 stars
    Trip Length/Capacity:
    Weekend
    Gear Capacity:
    46 to 48 liters
    Weight:
    4.44 to 4.62 lbs
    Features:
    Reservoir Compatible
    Raincover Included
    New arrival
    GregoryDeva 60 Pack - Women's
    $247.73
    Save 24%
    compared to  $329.95
    5 reviews with an average rating of 4.4 out of 5 stars
    Trip Length/Capacity:
    Multiday
    Gear Capacity:
    55 to 65 liters
    Weight:
    4.61 to 4.96 lbs
    Features:
    Reservoir Compatible
    REI OUTLET
    OspreyRenn 50 Pack - Women's
    $190.00
    2 reviews with an average rating of 5.0 out of 5 stars
    Trip Length/Capacity:
    Weekend, Multiday
    Gear Capacity:
    50 liters
    Weight:
    3.5 lbs
    Features:
    Reservoir Compatible
    Raincover Included
    Top Rated
    GregoryBaltoro 75 Pack - Men's
    $379.95
    114 reviews with an average rating of 4.7 out of 5 stars
    Trip Length/Capacity:
    Extended, Multiday
    Gear Capacity:
    70 to 80 liters
    Weight:
    4.8 to 5.4 lbs
    Features:
    Reservoir Compatible
    Top Rated
    GregoryKalmia 60 Pack - 2024 - Women's Plus Sizes
    $199.73
    Save 35%
    compared to  $309.95
    31 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
    OspreyEja 48 Pack - Women's
    $260.00
    15 reviews with an average rating of 3.6 out of 5 stars
    Trip Length/Capacity:
    Weekend
    Gear Capacity:
    45 to 48 liters
    Weight:
    2.67 to 2.76 lbs
    Features:
    Reservoir Compatible
    OspreyAura AG 50 Pack - Women's
    $340.00
    26 reviews with an average rating of 4.0 out of 5 stars
    Trip Length/Capacity:
    Weekend, Multiday
    Gear Capacity:
    47 to 50 liters
    Weight:
    4.16 to 4.29 lbs
    Features:
    Reservoir Compatible
    Raincover Included
    Top Rated
    OspreyAtmos AG LT 50 Pack - Men's
    $290.00
    10 reviews with an average rating of 4.8 out of 5 stars
    Trip Length/Capacity:
    Weekend, Multiday
    Gear Capacity:
    50 to 53 liters
    Weight:
    4 to 4.18 lbs
    Features:
    Reservoir Compatible
    Raincover Included
    MammutDucan Spine 28-35 Pack - Women's
    $145.73
    Save 35%
    compared to  $224.95
    6 reviews with an average rating of 3.8 out of 5 stars
    Trip Length/Capacity:
    Weekend
    Gear Capacity:
    35 liters
    Weight:
    3.09 lbs
    Features:
    Reservoir Compatible
    Raincover Included
    REI OUTLET
    Top Rated
    ExpedLightning 45 Pack - Women's
    $219.95
    10 reviews with an average rating of 4.5 out of 5 stars
    Trip Length/Capacity:
    Weekend
    Gear Capacity:
    45 liters
    Weight:
    2.36 lbs
    Features:
    Ultralight
    Reservoir Compatible
    MatadorBeast 18 Technical Pack
    $140.00
    17 reviews with an average rating of 4.5 out of 5 stars
    Gear Capacity:
    18 liters
    Weight:
    1.31 lbs
    Features:
    Reservoir Compatible
    ALPS MountaineeringNomad RT 75 Pack
    $209.73
    Save 25%
    compared to  $279.99
    0 reviews
    Trip Length/Capacity:
    Extended
    Gear Capacity:
    85 liters
    Weight:
    5.56 lbs
    Features:
    Reservoir Compatible
    Raincover Included
    REI OUTLET
    Top Rated
    GregoryKatmai 65 Pack - 2024 - Men's Plus Sizes
    $231.73
    Save 25%
    compared to  $309.95
    15 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
    Hyperlite Mountain GearSouthwest 55 Pack
    $379.00 - $399.00
    70 reviews with an average rating of 3.7 out of 5 stars
    Trip Length/Capacity:
    Multiday
    Gear Capacity:
    55 liters
    Weight:
    2.22 to 2.32 lbs
    Features:
    Ultralight
    Reservoir Compatible
    GregoryFocal 58 Pack - Men's
    $269.95
    29 reviews with an average rating of 4.5 out of 5 stars
    Trip Length/Capacity:
    Multiday
    Gear Capacity:
    54 liters
    Weight:
    2.58 lbs
    Features:
    Ultralight
    Reservoir Compatible
    Top Rated
    NEMOPersist 45 L Endless Promise All-Adventure Pack - Women's
    $259.95
    5 reviews with an average rating of 4.8 out of 5 stars
    Trip Length/Capacity:
    Weekend
    Gear Capacity:
    42 liters
    Weight:
    3.42 lbs
    Features:
    Reservoir Compatible
    GregoryJade 63 Pack - Women's
    $279.95
    14 reviews with an average rating of 4.2 out of 5 stars
    Trip Length/Capacity:
    Multiday
    Gear Capacity:
    60 to 63 liters
    Weight:
    4.25 to 4.32 lbs
    Features:
    Reservoir Compatible
    MammutDucan Spine 50-60 Pack - Women's
    $167.73
    Save 35%
    compared to  $259.95
    2 reviews with an average rating of 3.5 out of 5 stars
    Trip Length/Capacity:
    Multiday
    Gear Capacity:
    60 liters
    Weight:
    3.11 lbs
    Features:
    Reservoir Compatible
    Raincover Included
    REI OUTLET
    ALPS MountaineeringCaldera 75 Pack
    $187.73
    Save 24%
    compared to  $249.99
    0 reviews
    Trip Length/Capacity:
    Extended, Multiday
    Gear Capacity:
    75 liters
    Weight:
    5.69 lbs
    Features:
    Reservoir Compatible
    Raincover Included
    REI OUTLET
    Mountain HardwearPCT 50 L Pack - Women's
    $209.73
    Save 25%
    compared to  $280.00
    3 reviews with an average rating of 4.0 out of 5 stars
    Trip Length/Capacity:
    Weekend, Multiday
    Gear Capacity:
    50 liters
    Weight:
    4.08 to 4.11 lbs
    Features:
    Reservoir Compatible
    REI OUTLET
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