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Description
hyperlight mountain gear Hyperlite Mountain Gear Unbound Pack 55L / S / WhiteShips in 1 2 business days Based in Biddeford, ME Est. 2010 Day in, day out: this is the pack for the longest trails Born from and for the most transformative journeys, the Unbound 55 is built to go above and beyond the rigors of thru hiking. There is simply no better way to measure the effectiveness of a pack design than to send it out on thru hikes. Throughout 2,000+ miles and an average of five to six months, day in, day out, loaded and unloaded,
Ships in 1-2 business days | Based in Biddeford, ME | Est. 2010
Day in, day out: this is the pack for the longest trails
Born from and for the most transformative journeys, the Unbound 55 is built to go above and beyond the rigors of thru-hiking.
There is simply no better way to measure the effectiveness of a pack design than to send it out on thru-hikes. Throughout 2,000+ miles and an average of five to six months, day in, day out, loaded and unloaded, jostled and dragged, and exposed to the elements, one of these long walks tells you the truth. So, that’s what Hyperlite Mountain Gear went after, and the Unbound 55 is the result. Every carefully considered feature fought for its right to remain, leaving only the essentials required for an efficient, comfortable, adaptable, and dependable travel companion.
Thru-hiking is hard enough. Let the Unbound 55 carry some of the weight.
Features:
- Internal Frame
- Padded Removable hip belt
- Roll-top closure system with removable side compression straps for customizable compression
- Top Y-strap compression - Designed to secure gear
- Large dual-entry front pocket provides significant storage as well as streamlined access to smaller items (i.e. tent stakes)
- Oversized side pockets for streamlined access to water bottles and other gear on the go
- Bottom stash pocket with a trash port features durable Dyneema® stretch mesh, ideal for easy access to snacks or a quick place to store your rain jacket
- Updated removable hip belt provides more cushion and the ability to customize your pack fit
- Integrated plastic sheet with 1/4" high-density foam back panel pad
- Four 1/4" vertical daisy chains for attaching extra gear for trip-specific customization, in addition to a horizontal daisy chain below dual-entry front pocket
- Removable vertical side compression straps
- Seam tape on all vertical side seams and behind all sewn-on pack features
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Specs
Volume: 64L (total capacity)
- Internal volume: 55L
- External pockets: 9L
External Pockets: 6
Recommended Maximum Load Capacity: 40 lbs
Sizing:
- Small: 15” - 17” torso | 38.1cm - 73.2cm
- Medium: 17” - 19” torso | 73.2cm - 48.3cm
- Large: 19” - 21” torso | 48.3cm - 53.3cm
- Tall: 21"+ torso | 53.3cm+
*See our backpack sizing page to learn how to fit a backpack
Weight:
- White Medium: 30.2oz | 856g
- Black Medium: 34.1oz | 967g
Dimensions: 38.5"H (fully unrolled) x 10"W | 97.8cm x 25.4cm
- Circumference (Top | Bottom): 40" | 35" /101.6cm | 88.9cm
Materials:
- Body: DCH50 & DCH150
- Side Pockets: Hardline with Dyneema®
- Front & Bottom Pockets: Dyneema® Stretch Mesh
- Shoulder Straps & Hipbelt: Hardline with Dyneema®, dual-density 1/8" closed cell rigid foam, 1/4" closed cell foam, and spacer mesh
- PFAS-Free
Made in Mexico
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 1733 reviews
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Product Reviews
★★★★★ 5
Wonderful, Gripping, Suspenseful, and Miraculous!
Format: Hardcover
The first thing I thought when I started reading Ann Patchett’s new novel, “Whistler” was: “Oh no, this is SO GOOD it’s going to go by too quickly!” I was right, and the only remedy to that is to read it again – it’s that great.
Patchett has created a matryoshka doll of a novel with a story inside of a story inside of story, and they are ALL wonderful, gripping, suspenseful, and miraculous!
The inciting incident that sets off the story takes place in the Metropolitan Museum of Art in NYC. As Daphne and her husband Jonathan take in the art, Jonathan notices that they are being followed by an older man who turns out the be Daphne’s former stepfather, Eddie, whom she hasn’t seen in 44 years (since she was nine) but who was pivotal in how her life unfolded.
Through the narrative, Daphne, and her sister Leda, relive long forgotten memories from their brief but impactful time with Eddie, now understanding what they couldn’t as children.
Patchett has written about blended families, divorce, and stepparenting before, in her wonderful 2016 novel “Commonwealth”, and in some of the personal essays about her own childhood. So, she knows what she’s talking about!
Patchett beautifully evokes childhood nostalgia and skillfully portrays the way the past can sometimes seem more immediate than the present, highlighting reconnection, reconciliation, and grace.
Thank you yet again, Ann; this was just the book I needed right now!
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Reviewed in the United States on June 2, 2026
★★★★★ 5
One of Ann Patchett’s best novels.
Format: Hardcover
“Whistler,” by Ann Patchett, Harper, 320 pages, June 2, 2026.
Daphne and Jonathan Fuller are visiting the Metropolitan Museum of Art when Jonathan notices an older man following them. They go up to the next floor and the man is still following them.
It turns out he is Eddie Triplett, Daphne’s former stepfather, who was married to her mother for a little more than year when Daphne was nine. They haven’t seen each other in almost 45 years, but he recognizes her.
It is a chance meeting. Daphne teaches literature at a private school and Jonathan is a retired hospital administrator. Eddie is an editor at Random House, but he wasn’t at the office this day because of a water main break.
Daphne visits her sister, Leda, to tell her about the encounter. Flashback to 1980, when Leda was having an appendectomy, Eddie was driving Daphne to the hospital in a snowstorm and they were in an accident. Daphne had to climb out of a car window and walk for help. After that, her mother divorced Eddie. Of course, there’s more to what happened.
This is a wonderful story about adults looking back at the choices they’ve made and the choices that others made for them. It is about the small things that impact our lives and memories of childhood. It is about families, love and bravery. This is one of Ann Patchett’s best novels.
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Reviewed in the United States on June 2, 2026
★★★★★ 5
Another amazing book from a talented author
Format: Kindle
This is one of my favorite authors so I knew I would enjoy this book and once again, the characters seemed so real like people I knew personally. I very much enjoyed Daphne and Eddie’s relationship and I loved learning about Eddie and Daphne’s mother’s life together and why things played out the way they did. This book truly shows how people can impact us forever regardless of how long they were in our life. There was so much beauty in this book despite the loss and sadness at times. I received an advance review copy for free, and I am leaving this review voluntarily.
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Reviewed in the United States on June 2, 2026
★★★★★ 5
Revisiting Childhood Story
Format: Hardcover
When you look back on your childhood, are there unresolved feelings? What happens when you look back on your life to reflect?
Daphne Fuller is our main character in this new novel by Ann Patchett. Jonathan, her husband, is very observant and can’t help but notice an older man following them on a visit to the Met. Imagine Daphne’s surprise when she discovers that the older man is her former stepfather, who was married to her mother for only a short time when Daphne was nine. Eddie Triplett was a favorite, though, and she adored him. It was also during this time that she experienced a very pivotal point in her young life.
Now in her early 50s, Daphne and Eddie get reacquainted and remember how much they enjoyed each other’s company. It’s natural to wonder what her life would have been like had Eddie stayed involved. Daphne finally learns the truth about why Eddie and her mother divorced.
Ann Patchett is one of those writers who make storytelling seem effortless, and I enjoy her books and the characters she creates. As Daphne reflects on her life, her husband heads back to his childhood home to clean it out after the death of his mother. Both are grappling with childhood memories and family dynamics.
There is a pivotal story about a horse called Whistler, but this is not a ranching story. This book is filled with characters and families who love, make mistakes, reconcile, grapple with loss, and live richer lives.
Thank you to Harper for my gifted copy. All opinions are my own.
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Reviewed in the United States on June 3, 2026
★★★★★ 5
Classic Ann Patchett: A moving family drama
Format: Hardcover
Ann Patchett’s new book WHISTLER is literary fiction in its purest form. Rather than a plot-driven story that goes from A to B, she writes about everyday moments in a way that makes the reader relate. Her stories are an in-depth study of humanness, of our shared experiences and our limitations.
Much of this story is told in flashbacks, revealing a 1980 car accident involving MC Daphne and her stepfather Eddie; and here we learn the significance of a horse named Whistler. Daphne is an English lit teacher at a girls’ school and Eddie is a literary editor, so I loved their discussions. Surrounding these two are a host of unique and interesting characters: Daphne’s husband Jonathan, her birth parents, and younger sister Leda, a clinical psychologist. Although facts are related, the meat of the narrative is what the characters think, feel, fear, and regret. It’s a story about family relationships and the long-lasting effects of events and words for years afterward. It’s about the power of our memories.
There’s something about Ann Patchett’s witty and perfectly crafted prose that grips the reader. She has an extraordinary ability to tell a simple story, highlighting human experiences in such a way as to make it an introspective venture.
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Reviewed in the United States on June 3, 2026