What's the maximum weight that it can hold?

Not sure off weight capacity although for 8 days I had it totally stuffed

Can you fit a pair of jeans and a shirt in the bag?

Yes there is sufficient space for a pair of clothes. I typically put my dress shoes and my lunch into the bag which is probably the extent of its capacity.

Will it fit a usgi sleep system in it ?

I do not know the size of the usgi sleep system. Check out the volume of the bag you are looking at. I do not have the bag with me now to measure it. It is very large though.

Any funny feelings when riding a road bike with a fully loaded bag ?, Balance issues ?, Other ?

Haven't yet had this bag on my road (gravel) bike...only on my mt bike. That said, its quickly apparent you have more weight up HIGH on the bike (to be fair I also had a handlebar bag and a top-tube bag...so I was carrying about 25 extra pounds total)...when you first start rolling you cant help but notice the extra weight, and how high-centered you now are (as in, a little slip of the front wheel and you would be down before you knew what happened). So its all about being smooth and balance...kind of like on rollers (where one slip can be disaster). Quite honestly it doesn't take long and you can easily forget about how heavy your bike is...you do want to TRY to put your heaviest stuff as low in the bag as possible (I keep my jet-boil down near the very bottom). Its a GREAT BAG, enjoy the ride!

Waterproof Bikepacking Bag | Desertcart Japan

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¥28568

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🚴‍♂️ Gear Up, Stand Out: The Ultimate Waterproof Saddle Bag for Every Ride!

RIDE RAIN OR SHINE - Waterproof 600D nylon with TPU film keeps your belongings dry and mud-free, cleaned effortlessly with a damp cloth.
SAFETY MEETS STYLE - Reflective straps boost your night visibility, doubling as a fender to protect your clothes from splashes.
NO TOOLS NO HASSLE - Quick-install fixed buckle and adjustable straps fit any bike type—road, mountain, BMX—without extra gear.
BUILT TO LAST PROTECT - Steel-reinforced frame maintains shape and shields your gear from impact on every adventure.
EXPAND OR COMPACT WITH EASE - Roll-top design lets you customize storage from daily essentials to full bikepacking gear.

The ROCKBROS Bike Saddle Bag offers a versatile 14L capacity with an adjustable roll-top closure, crafted from durable 600D nylon and waterproof TPU film. Designed for easy, tool-free installation on any bike, it features reflective straps for enhanced night safety and a steel-reinforced frame to protect your gear. Perfect for millennial professionals who demand style, functionality, and reliability on every cycling journey.

Specifications

ASIN	B076CC6VM1
Automotive Fit Type	Universal Fit
Best Sellers Rank	#205,638 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #88 in Bike Seat Packs
Brand Name	ROCKBROS
Capacity	14 liters
Closure Type	Buckle
Color	Max 14L
Compatible with Vehicle Type	Bicycle
Customer Reviews	4.3 4.3 out of 5 stars (401)
Handle Type	Web Handle
Item Dimensions L x W x H	30.91"L x 14.57"W x 5.91"H
Item Highlight	Large Capacity Bike Seat Post Bag For Road Mountain Bikes, Bicycle Seat Pack With Reflective Stripes, Easy Installation
Item Weight	16 ounces
Manufacturer	ROCK BROS
Manufacturer Part Number	AS-012
Material Type	600D Nylon+Waterproof TPU Film
Model Number	AS-012
Mounting Type	Seat Mount
Number of Compartments	1
Number of Items	1
Pattern	Solid
Shell Type	Soft
Size	Max 14L
Strap Type	Adjustable
Style Name	Sporty
UPC	658126745406
Water Resistance Level	Waterproof

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