This tool bag is amazing. It seems very strong very terrible and holds all my tools well. I was worried that it might be too heavy but it is an amazing bag and I look forward to many years of using it.It has a lot of ways to organize your tools, am carpenter and is Perfect to carry the main tools you need for small jobs. Really heavy duty and very comfortable.Good quality backpack, sturdiness, coworkers complementing the durability and quality materials of this backpack, my husband standout with his backpack, very spacious inside. Good investment for sure.This pack holds a lot more than what you would think. The tools are very visible and easy to find quickly. The small pouches are great to hold small tools or materials. Another great product from Kline. You can NEVER go wrong with Kline products and service. Electrician’s have Always been a fan of Kline.Tough. Not for tons of tools, but for a tech, it's perfect. It is solid and holds about 100lbs of tools and equipment if you pack it right. I love it.I am a able tech and this backpack has made my life easier to carry my tools and everything I need for in home repairsMy son started a job in HVAC and loves this bagGreat product!(Note: this listing covers a bunch of different bags, I'm reviewing the Klein Tradesmam Pro Electrician's Backpack)The quality is up there, not quite Veto but better than the competition in this price range; no rivets but thick stitching and chunky zips.You can certainly get a decent amount of tools in here; the inside is well laid out and the front is an excellent design with the hard zip pouch and large pocket.The side storage could be improved, it only has two smallish pockets on the left and a metal clip (for tapes, or even drills) on the right.I've seen bags with larger netting pockets that work better on the sides, one cheap Stanley bag even has a velcro strap at the top of one side to hold a level in place.The real let down with this bag is its rigidity (or lack thereof). I purchased this on the basis of the solid base keeping it upright, and the front having the OPTION of laying flat in front, depending on how far you pull the zips down. The front side works ok, unfortunately the other side (the one with shoulder straps) is extremely floppy; far from being able to stand rigidly upright it so readily flops over that if you do the zips down halfway the front will stay upright while the back flops, causing the bag to loose balance and simply fall over!The only way to keep the back somewhat upright is by strapping it down to the front, which only works if the front is fully laid down flat.This could have been avoided with a more rigid panel, some kind of perpendicular support structure or a different design with the weight on a central panel (Veto Pro Pac style).I would highly recommend this product, the bag is solid with good back pads. Its a good length, I found the veto to tall and I'm 6ft 2". The unit is light weight and comfortable to carry. Although I see no need to the chest strap other than to get in the way. The Veto equivalent is heavy, even to an uncomfortable level of just putting it on empty. The Klein is even a nice design for going up enclosed ladders. Havent had enough time to test the zipper strength, but it cant be worse than a CK bag. Ideal storage space except there is a lack of small zipped pockets for crimps/bottle seals/fittings. The pockets are nicely organised for a good assortment of different sized tools and enough space at the bottom for a few small items. I've got a mag valve, small bacho socket set and a wera screw driver set and I could probably fit in some other bits. The hard case at the front is a decent size for valuables, not big enough for a label maker. The front pouch below I cant personally find a use for, maybe some folded up permits or some extra spanners if needed. I got it for £90 like new using an amazon refurbish (Basically new bag, damaged packaging). This way I prevent paying the £30 delivery that was making me question the choice. Money well spent.This is a very well made backpack, the seams and zippers are tough and they promise a long life, if you dont kick the bag around ofc. The most "delicate" point is probably the end of the zippers where it makes an awkward curve at the finish in order to be more accessible to the tools at the bottom. Although you can use the bag without unzipping it all the way and still have great reach to all tools except the ones at the bottom where i choose to store the most rare used ones so for me its not a big problem. It can handle ALOT of weight without anything rip or tear and it feels real good to my back while carrying it without feeling the weight even when i do 20-30 mins of walk with it fully packed. If you carry alot of tools (who doesnt :) ) you'll find that although it fits all you dont have much storage space for small parts for service but that depends on your profession, i can live with it. After having tried most backpacks i can find in my country i settled with this because for me its the perfect balance between storage space and volume to carry.These are fantastic! Solid zips, loads of pockets. Nice thick construction and a hard base! I can fit all of the important hand tools to do most small jobs. They are expensive but they are fantasticJust right for amount of tools you need, had a different make before but was rubbish well known make also. Go for this you will not be disappointed.