"It doesn't even feel like I am wearing a pack!"


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Effortless Rhythm

Effortless Rhythm is a dual-compartment Aarn backpack, designed to take your gear into the world's most remote places comfortably.  Perfect for multi day backcountry trips or long-distance thru-hiking trails or just extra space for extra creature comforts.  

With a separate compartment at the bottom, it makes it easy to store and find gear. The lid is removable and can also be converted into a bum bag (fanny pack)! 

Fully featured, it allows you to carry a wide variety of adventure tools such as trekking poles or ice axes.



Adjustable back-length

On-Adjust buckle allows back-length shortening with the pack on to allow a precision fit to a wide range of body sizes

Breathable stretch 3D mesh that auto-moulds to the slope of your shoulders

Twin stabiliser take-off options with 5cm height difference for a precision fit

Flow-Thru stabilisers prevent shoulder straps distortion when top stabilisers are tightened

U Flow by interlinked bottom tensioners

Pelvic-Form Hip Belt auto-moulds over the top of your hips to your precise hip shape. Each size adjustable by 10cm

Aarn Balance Pockets:Are not included, please choose your Aarn Balance Pockets here.

Optional extras: Lasso-loc Straps, Ski Straps or Gear Racks 

Tech Specs

Fabrics -

Main - 500D Nylon Kodra

Contrast - 100D Robic

Bottom - 210D Robic Gridstop with UHMWPE

Dry Liners - 190T Nylon

Dimensions -

W 40cm x D 25cm x H 75cm (M) / 85cm (L)

W 15.7in x D 9.8in x H 29.5in (M) / 33.5in (L)

Litres -

66L in the main body (M)

72L in the main body (L)

Max Load -

17kg or 37.4lbs

Pack Weight -

1446g or 3.2lbs (M) + liner

1506g or 3.3lbs (L) + liner

Colour -


Size Guide

Size Chart -

Please visit our size guide and learn how to measure your torso and hips here.

Back Length -

Medium -

43cm - 53cm or 17in - 21in

Long -

53cm - 57cm or 21in - 22in

Hip Belt -

Small, Medium, Large and Extra Large options.

Check out the hip belt size guide here.