G'day Alex,

No difference in quality for materials or workmanship - but the Journey uses a 650 loft down which has less loft than the Altitude, using 750 loft.  Whilst the 650 grade loft means you get a more affordbale bag, it also means that more down is required to achieve the same insulative value.  Hence you get a heavier bag, that packs larger.
The Journey series is a great car camping or entry level hiking bag, whereas the Altitude is better suited for multiday hikers or adventures that want a bag which can compress down abit smaller.

G'day Laurie,

The maximum user height on the "Long" Journey bag is 138cm, so its quite likely you'd find this bag a bit too tight.
At 185cm tall, we'd be recommending the Unisex bags

G'day Claire,

They definitely are, I've always ut my kids in adult bags as kids' bags just don't have the same quality, materials, and testing standards.  It also means you essentially have one investment that will grow with them, so it's a win win.
The Trek Tk3 is roughly the equivalent unisex bag...the women's specific range runs warmer as scientifically women sleep colder than men.
Other than a difference in equivalent comfort temps, and extra insulation through the foot box, the only real difference between the unisex and women's specific bags is the shape, the women's one having a bit more width.  It's not uncommon for men to go with the women's specific versions, and vice versa, if the journey is ticking the box more for what you need.

Hope that helps.

G'day Leanne,

I'm 171cm tall and around a size AU 14, and I'd want to go up to the long.
I'd say if you're 168cm you'd be ok, but check out around the 3:15min mark of our product video as I run through the size and overall comfort whilst I'm in the bag.  
That might help make up your mind!

G'day Larissa,

Yes, the Journey Jo2 has hydrophobic down, Sea to Summit uses RDS 650 Loft ULTRA-DRY Down™.

G'day Bron,

They sure will, the Trek and Journey models have zip coupling and will join together with no worries at all. If you're looking for another option and have a little more $$ available, then the Altitude and Ascent are also a great combo.

Hi Steve,

The Journey sleeping bag is a women's specific bag with a right-hand zipper, it can only be zipped to a unisex bag with a left-hand zipper - e.g. the Sea to Summit - Trek range. There aren't any means to zip 3 together, unfortunately.

G'day Nay,

The Journey Jo2 is a Women's specific bag with 650 loft down, and a right-hand side zipper. The equivalent unisex bag is the Trek TK3 model. The Ascent Ac3 has 750 loft down, a left-hand side zipper and a half zipper on the right-hand side. The Women's specific equivalent to this bag is the Altitude At2. The main differences between the two ranges are the rating of the down, as well as the external sleeping bag material. Feel free to give us a call, but if you're looking for a top-quality women's specific bag we'd suggest the Altitude At2.

G'day Ali,

This sleeping bag comes in 2 sizes - Regular and Long which can be picked above in the box above the price. In your case, the Long will suit your length perfectly and give you a good amount of room to stretch out!

G'dau Joscelyn,

The Journey Jo2 packs into a medium sized stuff sack with a 15L total volume and approximately 10L compressed volume. The packed dimensions we have listed are 44cmL (this is the total length of the stuff sack when not compressed) x 20cmW. When the bag is compressed in the sack we'd expect it to reduce down by at least one third.