Sierra Designs

Sierra Designs Flex Lumbar – technical lumbar pack for hiking & trail adventures

SKU: KY-2565 Category: Outdoor Gear

Variant: 3-6l

7-10l
Colour: Peat

Bearing Blue

On stock in variations

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105,00 €

incl. 19% VAT , Free shipping

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Lumbar pack for hiking, biking and demanding trails

The Sierra Designs Flex Lumbar is more than a waist pack – it’s a technical alternative to a small backpack.
Its expandable capacity (3–6 L or 7–10 L) adapts to every adventure — from hiking and trail riding to fast-paced bike tours.
With compression straps, a padded hipbelt and dual bottle holders, your essentials stay balanced and secure even on demanding terrain.

✅ Expandable capacity (3–6 L / 7–10 L) – adjust to route and load
✅ Compression straps & HDPE frame – stable, body-hugging fit at speed
✅ Dual mesh bottle pockets for hydration and nutrition
✅ Ventilated, padded waist belt adjustable from 20–51 in (50–130 cm)
✅ Durable 420D nylon with DWR coating – weather resistant & built to last

📏 Dimensions (size M): approx. 14 × 8 × 5 in (36 × 20 × 13 cm)
⚖️ Weight: 0.84 lb (3–6 L) / 0.97 lb (7–10 L)
📐 Adjustable waist belt: fits 20 – 51 in (50 – 130 cm)

Sierra Designs Flex Lumbar – technical lumbar pack for hiking & trail adventures

Description

Productinformation in detail

Key Features

Materials & Care

Reviews

Description

Productinformation in detail

Key Features

Materials & Care

Reviews

Lumbar pack for hiking, biking and demanding trails

📏 Dimensions (size M): approx. 14 × 8 × 5 in (36 × 20 × 13 cm)
⚖️ Weight: 0.84 lb (3–6 L) / 0.97 lb (7–10 L)
📐 Adjustable waist belt: fits 20 – 51 in (50 – 130 cm)

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Built for movement – from hiking trails to bike rides

The Sierra Designs Flex Lumbar is made for people who move.
Whether you’re tackling demanding hikes, fast-paced trail rides or long days outdoors, this lumbar pack keeps your essentials secure, balanced, and easy to reach – without the bulk of a backpack.

Expandable storage for flexible adventures

Available in two sizes – 3–6 L and 7–10 L – the Flex Lumbar adapts to your trip.
Its expanding side gussets and compression straps let you adjust capacity as your load changes.
Keep it compact for shorter rides, or open it up for longer hikes when you need space for extra layers, snacks, or gear.

Stable fit, even on demanding terrain

A padded waist belt with an integrated HDPE frame keeps the pack close to your body and prevents bounce, even when the trail gets rough.
Dual mesh bottle pockets and external compression straps keep weight evenly distributed and hydration within easy reach.
The result: better balance, less movement, and more comfort – on foot or on two wheels.

Lightweight, weather-resistant design

Constructed from tough 420D nylon with a DWR (durable water-repellent) coating, the Flex Lumbar stands up to weather and wear.
Its breathable back panel and reinforced zippers make it equally reliable on multi-day treks or long bike rides.

Our take – Sierra Designs Flex Lumbar at Campanions

The Flex Lumbar is a smart, highly functional alternative to a small backpack.
It’s light, stable, and ready for any trail – perfect for hikers, bikers, and explorers who want freedom without compromise.

Item information	Value
Color:	blue
Shipping weight:	1,24 kg
Item weight:	1,24 kg

✅ Expandable capacity (3–6 L / 7–10 L)
Adjusts to your trip – from minimalist day rides to longer treks with extra gear.

✅ Compression straps & HDPE frame support
Keeps the load stable and close to your body – even on rough terrain or fast descents.

✅ Dual mesh bottle pockets
Quick access to hydration or snacks while on the move.

✅ Ventilated, padded waist belt (20–51 in / 50–130 cm)
Delivers comfort and balance during long hikes or bike rides.

✅ Durable 420D nylon with DWR coating
Weather-resistant, abrasion-proof and lightweight – ready for the trail.

✅ Smart alternative to a backpack
Freedom of movement and balanced carry for hikers and bikers alike.

Property	Details
Shell fabric	420D nylon with DWR (durable water-repellent) finish
Lining	Polyester lining with PU coating
Frame / support	HDPE frame sheet for load stability
Back panel	Padded, ventilated mesh structure
Strap material	Adjustable nylon webbing (20–51 in / 50–130 cm)
Zippers	Durable zippers with pull tabs and weather flap
Side pockets	Stretch mesh bottle holders on both sides
Weight	0.84 lb (3–6 L) / 0.97 lb (7–10 L)
Care instructions	Spot clean with damp cloth – do not machine wash
Water repellency	DWR finish – water-resistant and dirt-repellent
Drying	Air dry in shade – avoid direct heat or sunlight
Origin	Produced under certified manufacturing standards

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