Water flows into these holes naturally, but I can only imagine that trying to fill the base with sand would take forever.

If you were to measure and transfer it with jugs or similar, you’d be there for a ridiculous amount of time. As such, using a reflex bag is a good training tool for setting a rhythm and using your reactions to strike at the correct time. The 9-inch high-tension steel spring provides lightning-fast action, allowing you to train at any level, from beginner to world champion. Hyperflex (Unlock Base, Unlock Neck) setting is ideal for ultimate accuracy, speed, and agility training, and simulates sparring sessions for striking and defense. Train with this bag to gain the vital edge you need to win by honing your punching speed, accuracy, and timing.When using a reflex bag you usually want the bag to be around chin level for a realistic training, but a little higher or lower isn’t an issue. I needed something I could easily move around and didn't take up a whole lot of space, so this fit the bill.

Finally, you can use the Everlast Hyperflex with both springs unlocked, so the bag has two pivot points. As well as looking way nicer than an exposed spring, it actually helps prevent any injuries or glove wear if you misplace a punch. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. This spring means that when you punch, it will momentarily swing away, before swinging back towards you. The actual bag is a fairly dense foam, which has quite a firm resistance, while not feeling ‘hard’ to hit.Using a cobra bag is a great way to quickly improve your hand-eye coordination and fight reflexes, such as speed, accuracy, rhythm, and timing. The one downside of it that you cannot alter is that you pretty much have to conform to the speed of the bag, which is rhythmic and regular. This added randomness does mean that I find this really satisfying for practising footwork and evasion.

The second method of training with the Everlast Hyperflex is by locking the bottom spring so that only the top spring moves.Moving on from visuals, when we start to look at the materials it’s clear again that Everlast have tried to put together a really nice product. Reflex bags are something that can be found pretty cheap, and this is definitely a slightly more premium product. Instead I’d suggest you use a garden hose or similar, but there’s then no way to measure the amount of water used. Overall I feel like where this bag has tried to add variety, it instead finds itself torn between two extremes. Just inside the filling hole is a flat surface, which then flows off in multiple directions to the sides.

SportsPower WG has everything for the sport fanatic, fitness buff or just for everyday lounging around. Once your base is filled, and you have the height adjusted to your preference, there are then three options for how you want to train, depending on whether you lock either of the springs.

The pole is then half silver and half black, which again has ‘Hyperflex written down it in white and yellow. In other words, I don't think of it as a "central" piece of impact equipment, it is very good for learning to pivot around and practice body movement with, but too much use, or wrong use could build weird habits. As this swings so fast it does work out quite nicely for real fast drills where you’re just lightly hitting the bag. That probably means it’s a bit too tall for kids, but anyone teenager or older should have no problem using it.