What They Have in Common
Both are stand bags with double straps, stand legs, and matching rain hoods included. Both have full-length dividers (Sun Mountain lists four; Vessel lists three enclosed full-length dividers). Both have a valuables pocket — velour-lined on the Sun Mountain, hidden on the Vessel. Same category, same intended use, different priorities.
Where They Differ
Weight
This is the headline gap. The Sun Mountain lists at 4 lbs empty. The Vessel's published weight is 6.6 lbs for the body alone — Vessel notes the strap adds another 0.6 lbs, putting the carried weight at 7.2 lbs. That's a 3.2-lb difference. Half a pound doesn't sound like much until it's the back nine in August. Three pounds definitely does.
On a cart, nobody cares. On your shoulders for 18 holes, that gap is the whole conversation.
Waterproofing
The Sun Mountain is built from H2NO fabric with a waterproof PU coating and seam-sealed zippers. It's sold as waterproof, full stop. The Vessel is made from tour-grade synthetic leather and is not sold as waterproof. Both include a rain hood, so a surprise shower has some coverage either way — but only the Sun Mountain's bag itself is sold as waterproof. If you play in wet climates or just like knowing your gear is protected, the Sun Mountain has a real structural advantage here.
Organization and Storage
The Vessel has more of both. A 6-way top with an 8.25 x 10-inch opening versus the Sun Mountain's 4-way, 7.5-inch top means more individual slots and a bit more room to work with. A 14-way top means you see the empty slot before you drive off without your wedge — a 6-way is nowhere near that, but it still gives you more separation than four. Ten pockets versus eight, including the Vessel's insulated cooler pocket with drainage and a magnetic rangefinder pocket. The Sun Mountain has a velour-lined rangefinder pocket, but Sun Mountain doesn't call it magnetic.
The Vessel also has a cart strap pass-through. Sun Mountain doesn't publish one. A cart strap pass-through is the difference between strapping in once and re-threading it every time you want a ball — if you ride regularly, that matters.
Price
The Sun Mountain lists at $350. The Vessel lists at $439. That's an $89 gap at list, and the Sun Mountain is the lighter and waterproof one.
Who Should Buy Which
Get the Sun Mountain H2NO E-2.5 if:
- You walk at least some of your rounds and want to feel it as little as possible
- You play somewhere that gets rain and want the bag itself to handle it
- You'd rather save $89 at list and not give up anything that matters to your game
- You're carrying clubs, not staging a tailgate — eight pockets is plenty
Get the Vessel Player V if:
- You mostly ride and weight is irrelevant to you
- You want a cart strap pass-through and an insulated cooler pocket and those are genuine priorities
- You like more club separation and a larger top opening
- The look and material of the Vessel matter to you and the premium feels worth it
The Bottom Line
The Sun Mountain H2NO E-2.5 is lighter, waterproof, and $89 cheaper at list. For a walking bag — or honestly for most bags — those are the specs that matter most, and it wins on all three. The Vessel Player V has more pockets, a cooler pocket, a cart strap pass-through, and a bigger top, but it weighs 3.2 lbs more as carried and isn't sold as waterproof. If those extras are genuinely on your checklist, the Vessel earns its price. If they're not, the Sun Mountain is the better bag for less.
Get the Sun Mountain H2NO E-2.5 Stand Bag.