Westside Barbell Mega Block premium lifting chalk, 8 oz magnesium carbonate block shrink-wrapped with black and gold label
Westside Barbell Mega Block lifting chalk, 8 oz solid magnesium carbonate block in black and gold packaging
Westside Barbell Mega Block magnesium carbonate lifting chalk, 8 oz block for powerlifting, weightlifting and strongman grip
Westside Barbell Mega Block premium lifting chalk, 8 oz block, 100% magnesium carbonate made in the USA
Westside Barbell Mega Block premium lifting chalk, 8 oz magnesium carbonate block shrink-wrapped with black and gold label
Westside Barbell Mega Block lifting chalk, 8 oz solid magnesium carbonate block in black and gold packaging
Westside Barbell Mega Block magnesium carbonate lifting chalk, 8 oz block for powerlifting, weightlifting and strongman grip
Westside Barbell Mega Block premium lifting chalk, 8 oz block, 100% magnesium carbonate made in the USA

WSBB Magnesium Carbonate Lifting Chalk

Price
Regular price $21.95
Regular price Sale price $21.95
Save
/
  • In stock, ready to ship
  • Backordered, shipping soon
Apparel Sizing

FIND YOUR FIT

All measurements are taken from the garment, laid flat, in inches. Tolerances are listed where applicable. If you're between sizes, size up for a relaxed fit or down for fitted.

Category

T-SHIRTS

OG Gym, Nitro, WTB & Classic Tee

Men's, body length and chest width, laid flat, in inches

OG Gym, Nitro, WTB and Classic Tee size chart in inches
Measurement XS S M L XL 2XL 3XL 4XL
Body Length 27 28 29 30 31 32 33 34
Body Length Tol. 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2
Chest Tolerance 1/2 1/2 1/2 1/2 1/2 1/2 1/2 1/2
Chest Width 17 1/2 19 20 1/2 22 24 26 28 30

Camo Tee

Men's, length, chest and shoulder width, in inches

Camo Tee size chart in inches
Measurement XS S M L XL 2XL 3XL 4XL
Length 24 26 1/4 28 1/4 29 1/4 30 31 32 1/4 33 1/2
Chest 17 1/4 18 1/4 19 21 23 25 1/4 27 28 1/4
Shoulder Width 14 3/4 16 3/4 18 1/4 20 3/4 22 1/2 23 1/2 24 1/2 26 1/2

Vintage Tee

Men's, body length, chest and sleeve, in inches

Vintage Tee size chart in inches
Measurement XS S M L XL 2XL 3XL 4XL
Body Length 27 28 28 1/2 29 1/2 30 3/4 32 1/4 33 1/4 34 1/4
Chest Width 19 7/8 20 7/8 21 7/8 23 7/8 25 7/8 27 7/8 29 7/8 31 7/8
Sleeve Length 7 1/4 7 3/4 8 1/4 8 3/4 9 1/4 9 3/4 10 1/4 10 3/4
Category

TANKS

Men's OG Nitro Tank

Body length and chest width, laid flat, in inches

Men's OG Nitro Tank size chart in inches
Measurement XS S M L XL 2XL 3XL
Body Length 27 28 29 30 31 32 33
Body Length Tol. +/-1 +/-1 +/-1 +/-1 +/-1 +/-1 +/-1
Chest Tolerance +/-3/4 +/-3/4 +/-3/4 +/-3/4 +/-3/4 +/-3/4 +/-3/4
Chest Width 16 18 20 22 24 26 28
Category

HOODIES & CREWS

Men's Hoodie

Body length, chest and sleeve from center back, in inches

Men's Hoodie size chart in inches
Measurement XS S M L XL 2XL 3XL 4XL 5XL
Body Length 27 1/2 28 1/2 29 1/2 30 1/2 31 1/2 32 1/2 33 1/2 34 34 1/2
Body Length Tol. 1 1 1 1 1 1 1 1 1
Chest Tolerance 1 1 1 1 1 1 1 1 1
Chest Width 20 1/2 21 23 24 1/2 26 1/2 27 1/2 28 1/2 30 31 1/2
Sleeve Length 34 1/2 35 1/2 36 1/2 37 1/2 38 1/2 39 1/2 40 1/2 41 41 1/2
Sleeve Tolerance 1 1 1 1 1 1 1 1 1

Men's Lux Hooded Sweatshirt

Body length and chest width, laid flat, in inches

Men's Lux Hooded Sweatshirt size chart in inches
Measurement XS S M L XL 2XL 3XL
Body Length 26 1/2 28 29 1/2 31 32 1/2 34 35 1/2
Chest Width 19 1/2 21 22 1/2 24 25 1/2 27 28 1/2

Crewneck Sweatshirt

Body length, chest and sleeve from center back, in inches

Crewneck Sweatshirt size chart in inches
Measurement XS S M L XL 2XL 3XL 4XL 5XL
Body Length 26 27 28 29 30 31 32 33 34
Body Length Tol. +/-1 +/-1 +/-1 +/-1 +/-1 +/-1 +/-1 +/-1 +/-1
Chest Tolerance +/-1 +/-1 +/-1 +/-1 +/-1 +/-1 +/-1 +/-1 +/-1
Chest Width 18 20 22 24 26 28 30 32 34
Sleeve Length 32 1/2 33 1/2 34 1/2 35 1/2 36 1/2 37 1/2 38 1/2 39 1/2 40 1/2
Sleeve Tolerance +/-1 +/-1 +/-1 +/-1 +/-1 +/-1 +/-1 +/-1 +/-1
Category

BOTTOMS

Men's Jogger

Inseam, outseam and waist, in inches

Men's Jogger size chart in inches
Measurement XS S M L XL 2XL
Inseam 28 29 1/2 30 30 30 1/2 30 1/2
Length Tolerance 1 1 1 1 1 1
Outseam 38 40 41 41 1/2 42 1/2 43
Waist 26 to 28 28 to 31 31 to 33 33 to 35 35 to 38 38 to 42
Waist Tolerance 1 1 1 1 1 1

Nitro Sweatpant

Inseam and waist, in inches

Nitro Sweatpant size chart in inches
Measurement S M L XL 2XL 3XL
Inseam 29.5 30 30.5 31 32 33
Waist 16.25 17.25 18.25 19.25 20.25 21.25
Category

WOMEN'S

Women's Original Gym Tee

Body length and chest width, laid flat, in inches

Women's Original Gym Tee size chart in inches
Measurement XS S M L XL 2XL 3XL
Body Length 25 3/4 26 3/8 27 27 5/8 28 1/4 28 7/8 29 1/2
Body Length Tol. 1/2 1/2 1/2 1/2 1/2 1/2 1/2
Chest Tolerance 1/2 1/2 1/2 1/2 1/2 1/2 1/2
Chest Width 15 1/2 16 1/4 17 1/4 18 1/4 19 3/4 21 1/4 22 3/4
Reference

HOW TO MEASURE

All measurements above are taken from the garment laid flat. To compare against a shirt you already own and love, lay it flat on a hard surface and measure with a tape.

Body Length

From the highest point of the shoulder seam straight down to the bottom hem.

Chest Width

One inch below the armhole, measured straight across from edge to edge. Garment laid flat, not doubled.

Sleeve Length

From the center back of the collar, across the shoulder seam, all the way down to the sleeve cuff.

Shoulder Width

From the outer edge of one shoulder seam straight across to the outer edge of the other.

Inseam

From the crotch seam straight down the inside of the leg to the bottom of the hem.

Waist

Across the top of the waistband, edge to edge. Double the number for full waist circumference.

Tolerance is the acceptable variance per garment. A "+/- 1" tolerance means the actual measurement can be up to one inch over or under the listed size.

Still Stuck

NOT SURE WHICH SIZE TO ORDER?

If you're between sizes or sizing for a specific lift or sport, send us your height, weight, and what shirt size you wear from another brand. We'll point you in the right direction.

Email Orders
Shipping calculated at checkout.
  • *Free Shipping for orders over $100
  • 30 Day Return
  • Secure payments

WESTSIDE BARBELL MEGA BLOCK. Premium lifting chalk for lifters who chase the work everyone else avoids. Dense, high purity block chalk pressed from 100% magnesium carbonate and made in the USA. Maximum grip, minimum mess, zero excuses.

Block chalk beats loose chalk where it counts. Less airborne dust, less waste, and a denser application that locks into your hands and holds through every rep. Break off what you need, crush it into loose chalk when you want it, and keep the rest sealed and ready. This is chalk built for your heaviest days.

What's in the box?

  • 2 x 8 oz Mega Blocks (1 lb total)
  • 100% pure magnesium carbonate
  • Made in the USA
  • Net weight 1 lb (454 g)

Built for

  • Heavy deadlifts, rack pulls and grip work
  • Powerlifting, weightlifting and strongman
  • Pull-ups, gymnastics and bar work
  • Any lift where your grip decides the outcome

Frequently asked questions

Is block chalk better than loose chalk?
For most lifters, yes. Block chalk is denser and cleaner. It puts far less dust in the air, wastes less, and lets you control exactly where it goes for a firm, even coat that holds through heavy sets. You can still crumble a piece into loose chalk whenever you want.

How much chalk is in the box?
Each box holds two 8 oz Mega Blocks, for a full 1 lb (454 g) of 100% magnesium carbonate.

How long does a Mega Block last?
A long time. Because the chalk is dense and you use only what you need, one block outlasts bag after bag of loose chalk for most lifters. Exact life depends on how often and how heavy you train.

Is it pure magnesium carbonate?
Yes. The Mega Block is 100% magnesium carbonate with no fillers or drying agents, and it is made in the USA.

Can I break it into loose chalk?
Yes. Snap off a chunk and crush it in your hands or a bowl any time you want loose chalk, then keep the rest of the block sealed so it stays fresh.

What can I use it for?
Any grip-dependent training: deadlifts, rack pulls, presses, pull-ups, Olympic lifts, strongman, and gymnastics or bar work. As pure magnesium carbonate, it also works for rock climbing and any sport that demands a dry, secure grip.

Will it make a mess in my gym?
Less than loose chalk. Block chalk releases much less airborne dust, so it stays on your hands instead of your platform. Many gyms that limit loose chalk allow block chalk, but always check your gym's rules.

For those who do what others won't.
You may also like