EVOC has been making Boa-equipped bikepacking bags since 2019. Sure, they first started very small, but EVOC soon expanded to haul more gear, too. We got a preview of the expanded, more boxy Explorer range this past spring and summer. But now that you can actually buy it, lets dive into the details of the Seat Pack Boa WP that forms the heart of their bikepacking family.EVOC Seat Pack BOA WP 9, 12 & 15L bikepacking bags (Adventure photos by Katharina Kruse/EVOC)The new EVOC Seat Pack Boa WP bags are the biggest volume storage option in the brands bikepacking line-up. But they also tend to be the most adaptable, since you can roll them down quite far for smaller loads. And their latest adaptation of Boa wire & dial tensioning is easier than ever to really fine-tune a secure fit on your bike, helping prevent the dreaded saddlebag sway, no matter if your pack is half-empty or overstuffed.Whats new?The new Seat Pack features EVOCs latest waterproof, PFAS-free material with heat-welded seams. They also get a new V-shaped mount that keys against your seatpost to provide a more secure attachment, preventing side-to-side sway. Still, the mount is quite short in height on the post, which EVOC explains makes it possible to mount the new bags even on MTB dropper posts while retaining some drop capability. And also helps on smaller bikes with bigger wheels where theres often not a lot of clearance between the saddle and rear tire.They also feature new reinforced side panels to provide structure and help retain the bags shape keep the bag in shape when you cinch down your gear. The new, more boxy-shape also makes it easier to stuff your gear deep and low in the bag, notoriously the most important step in packing a bikepacking saddlebag to minimize sway.Tech detailsdual BOA wire fit systems with TPU straps to easily dial-in a secure connection to saddle railsV-shaped plastic seatpost mount with rubber gripper for secure, stable attachmentWP stands for waterproof with new PFAS-free, PVC-free 100% polyester fabricwaterproof roll-top closure with side buckles to adjust total volumeremovable zigzag bungee loops on top to stow more gearreflective details for visibility2-position taillight attachment lashing pointBOA 9L dimensions: 194515cm, 530gBOA 12L dimensions: 205017cm, 570gBOA 15L dimensions: 215617cm, 600g(Note: EVOC website illustrations do NOT have the correct dimensions.)EVOC Seat Pack BOA WP Pricing, options & availability(Photo Philipp Herfort/EVOC)Forming the core gear carrying capacity of the entire EVOC bikepacking range, the new Seat Pack Boa WP comes in three sizes and two colors. Pick from 9L, 12L & 15L, in classic Black or off-white Sand. (Photo Philipp Herfort/EVOC)The 9L Boa bag sells for $175 / 130, the 12L Boa for $200 / 150, and the 15L Boa for $215 / 170.Theres also a simpler, smaller 7L Seat Pack Ultra that replaces the nice Boa system for bikepacking weight weenies at $150 / 95.Get all of them now to head out on an adventure, directly from EVOC or their dealer bike shops.EVOCsports.com