For a lightly loaded day pack, determining the exact back length is not absolutely crucial. With trekking or mountaineering backpacks, however, it is essential, as only a perfect fit will efficiently transfer the weight to the hips. With heavy loads or backpacks featuring an internal carrying system, the centre of the hip wings should ideally rest on the iliac crest and the rear pad on the sacrum.
How do you measure back length?
To determine the back length, use a tape measure to measure the distance between the base of the shoulders or the level of the 7th cervical vertebra (which you can feel protruding where the neck meets the spine) and the upper edge of the iliac crest.
Ultralight, comfortable backpacking pack with roll-top closure
innovative, customisable T-Rex carrying system
efficient packing volume management
ultra-light ripstop nylon with reinforced base
Product Description
With its ultra-lightweight construction and adjustable back system, the Lightning was developed for trekking tours where low weight and high carrying comfort are crucial.
The innovative T-Rex carrying system with reduced contact points ensures effective ventilation and freedom of movement. The back length can be precisely adjusted, while the efficient load transfer to the hip belt ensures a stable and comfortable fit even with a heavier pack weight.
Sophisticated pack volume management allows flexible adjustments. The zig-zag compression straps are easy to adjust and, together with the roll-top fastener, allow variable volume control. They also secure larger equipment such as a sleeping mat or flysheet. Generous mesh outer pockets, zipped pockets on the hip belt and modular attachment points support clear organization.
Made from ultra-light ripstop nylon with a reinforced polyester base, the Lightning combines minimal weight, durable performance and well thought-out design.
Volume
40 l
Min. Weight
S/M: 1115 oz L/XL: 41.1 oz
Max. Weight
S/M: 1145 oz L/XL: 42 oz
Load limit
48.5 lb
Dimensions
25.5 x 12.2 x 9 in
Shell Fabric 1
210 D HMPE ripstop nylon PU coated 1000 mm water column bluesign® approved fabric
Shell Fabric 2
recycled 600 D 82T Polyester PU coated 1500 mm water column bluesign® approved fabric
Frame
6061-T6 aluminum stay
Product with Climate Contribution
EXPED calculates all climate emissions from the production and transportation of this product and finances certified climate protection projects through myclimate to an equal extent.
More and more EXPED products are made from recycled materials. Materials gained from previously made materials -such as PET-bottles or waste from the production of textiles.
Bluesign approved fabric
Bluesign® is the world's strictest textile standard for environmental and consumer protection in the textile industry. All materials of this product which are accordingly labelled are manufactured and approved according to the bluesign® standard.
All EXPED textile products are made without intentionally added PFAS since 2025. We work closely with suppliers and perform independent tests to ensure our products contain zero PFAS.
Réponse rapide, livraison rapide, prix raisonnable, emballage complet et en parfait état, article conforme 👍🏻🫶🏻
Traduit · Voir l'original
回覆快，運輸快，價錢合理，包裝完整無缺，貨品正確👍🏻🫶🏻
G GAujourd'hui
★★★★★
J'ai acheté un sac à dos sur leur site web. Réponse et livraison très rapides. J'ai fait une très bonne affaire sur leurs articles. Très satisfait !
Traduit · Voir l'original
Bought backpack from their website. Very fast response and delivery. Got a really good deal on their items. Very satisfied!
Lee Jun XianAujourd'hui
★★★★★
Acheté en ligne depuis l'étranger. Service fantastique et rapide
Traduit · Voir l'original
Bought online from overseas. Fantastic and swift service
Cheng ClaraAujourd'hui
★★★★★
Service client très bon et efficace ! Super !
Traduit · Voir l'original
Very good and efficient customer service! Nice!
Tang Lucasil y a 2 jours
★★★★★
Expédition rapide, personnel aimable, je rachèterai la prochaine fois.
Traduit · Voir l'original
出貨速度快，職員態度好，下次再來買
Cho Yan Ngil y a 3 jours
★★★★★
Livraison rapide, notifications d'expédition, emballage de protection, et le prix était réduit.
Traduit · Voir l'original
遞送快，有物流通知，有保護性包裝，價錢有折扣
Syed Abdillah Alkaffil y a 3 jours
★★★★★
J'ai reçu mes chaussures moins d'une semaine après ma commande ! Excellente qualité et la communication avec Hillmalaya a été bonne, avec des mises à jour constantes sur l'état de la commande par e-mail et par message. Merci !
Traduit · Voir l'original
Received my shoes within a week of order! Great quality and communication with Hillmalaya was good, always updating order status via email and messages. Thank you!
Oscar Chengil y a 5 jours
★★★★★
Commande reçue très rapidement 👍👍👍
Traduit · Voir l'original
好快收到貨👍👍👍
紫卡il y a 6 jours
★★★★★
Au moment de l'expédition, le magasin a constaté un problème avec l'article et ne l'a envoyé qu'après l'avoir réglé, afin d'éviter des tracas au client par la suite. Très bon service 👍🏻👍🏻
Traduit · Voir l'original
出貨時商家發現商品有問題 處理好後才送出 貨以免日後客人處理麻煩 很好的服務態度👍🏻👍🏻
Chan YM Anthonyil y a 7 jours
★★★★★
La veste est belle et de bonne qualité
Traduit · Voir l'original
The jacket is nice and good quality
JProject史提夫il y a 9 jours
★★★★★
Super rapide et vraiment génial !
Traduit · Voir l'original
快靚正
Foo Hee Sengil y a 9 jours
★★★★★
C'est la troisième fois que j'achète chez Hillmalaya, des produits de très bonne qualité.
Traduit · Voir l'original
This is the third time buying from Hillmalaya very good quality products
GLORIA NgAujourd'hui
