Side view of Perfromance Block HD-23 Large backpack with the bottom compartment open from the side. In there are a a pair of white sneakers, side by side. There are two openings on the side, each with a braille design patch and double white zipper rings. The lining is bright orange.
The Performance Block HD-23 backpack is standing upright like a rectangular tower. The top lid is open to show an open 13-inch laptop computer. The laptop deck has elastic straps to hold the screen of your computer securely. The bag can be used as a base for quickly opening your laptop and using it anywhere, even without a table nearby.
The front angle view of Performance Block HD-23 Large Backpack in Dark Navy. It has a cane pouch, white zipper rings on the openings, and both sides have 2 openings that lead to a double-decker inner compartment. There is a P.Block dog character keychain on the front, and there are 4 straps of Molle webbing and 2 wide strips of black velcro along the top and bottom.
Side view of Perfromance Block HD-23 Large backpack with the upper compartment open from the side. In there are a headphones case, a folded martial arts uniform and a down vest. There are two openings on the side, each with a braille design patch and double white zipper rings. The lining is bright orange.
Performance Block HD 23 Version - LARGE
HD-23 Upgrade Points: High Def Orange Lining, High Def white zipper rings, 3-D Contoured air mesh back, contoured nylon handle.
Top view of a large gray backpack with white zipper rings. The top has an outer pocket with a gray raincover inside
Showing a backpack with a large gray raincover on it. There is a reflective FEELDOM logo on the front of the rain cover.
A bright orange inner lining. A removable divider separates the upper and lower compartments. Someone is removing it by peeling away the divider from the inner walls of the backpack.
A close up of the side of the large gray backpack.  There is a rectangle rubber patch with the design of the moon and braille number one. It is blue on a black background.
Inside view of a Large backpack with bright orange lining and a divider for the upper and lower compartments. Side openings are on the right and left.  The top lid opens for a 13 inch Laptop computer and under the lid is a mesh zipper pocket.
Close up detail of the bottom of the backpack showing 3-D Textured rubber feet sewn onto each corner. They are about 3 inches by 2 inches in size and are bumpy to prevent slipping of your bag.
Performance Block HD 23 Version - LARGE
Performance Block HD 23 Version - LARGE
A large backpack with side openings. Gray ballistic nylon with white zipper rings and bright braille patches on the side. There is a zipper on the top with a rain cover. There is an additional pouch attached to the front. This TEKNO Pouch is sold separately. Glow in the dark labels read FEELDOM.
Back view of a gray backpack and black air mesh back padding. The padded straps have 3 D rings on each one. Attached to the D rings are a gray cane pouch, a small phone case pouch, and a braille keychain with a dog character on it.
Dark blackout image of the performance Block backpack, showing the FEELDOM logo patch is glowing in the dark. The keychain is white and black and visible in low light.
5 Black rubber rectangle patches with velcro on the back. They are tactical with a Braille design and digital numeral on them, numbered 1 through 4. The designs are in white, blue, yellow, orange, and glow in the dark. The center patch is the FEELDOM logo with Performance Block in braille.
Performance Block HD 23 Version - LARGE
Close up of the front of the backpack with molle webbing along horizontally in 4 srtrips. The bands are black and each loop can fit two fingers into the space.
Performance Block HD 23 Version - LARGE

Performance Block HD 23 Version - LARGE

Regular price $359.00 Sale price $379.00 Unit price per


The High-Contrast Upgrade of the Original Performance Block Large

HD-23 Version's NEW Features:

  • High Constrast Colors:  bright orange lining and white zipper rings.
  • Improved back padding and smoother handle for an even more comfortable carry experience.
  • P-Block Character version Braille Keychain included.
  • Waterproof Rain Cover included.
  • Rubber feet to prevent slipping and maintain stability upright.
  • Mesh zipper pouch under the inside lid.
  • Cane Pouch included - Attaches with hooks instead of Velcro.

Compatible with TEKNO and QUIK-E Pouches,  MOOL Bottle Holster (sold separately.)

The  X - Performance Block Backpack System

LARGE:  features built-in top deck for 13-in. Laptop, Braille Reader or Tablet.

MAIN COMPARTMENT with removable divider creating an upper and lower chamber. 

BOTH UPPER and LOWER chambers have Left / Right side access by way of large zippered doorways.  Double zipper rings are lockable on all access points. (Lock not included.)

Size:  H 19" x W 14" x D 9" / Weight: 4.4 lb / Capacity: 50 Liters

Includes Cane Pouch

Glow-in-the-Dark Braille P. Block Character Keyfob  

Unique Design - Color-number-coded 5 tactile Braille design patches which can be placed anywhere on the bag to identify storage compartments. Our design concept was created to allow people with visual impairment to "feel" these wonderous images inspired by nature.

1. The Full MOON

2. BIRDS by M.C. Escher

3. The NAUTILUS revealing the Fibonacci Sequence

4. 3-D CUBE which is also an optical illusion

5. The Feeldom x Performance Block patch is white / glow-in-the dark.

Ultra Heavy-Duty specialty deluxe tactical backpack. Reinforced back, dual-levels, enourmous storage spaces. Accessible to visually impaired people

Adjustable waist and chest straps for easy carry. Rigid and breathable back-cushion, padded straps allow for stable and comfortable carry in any situation. Premium custom ring-zippers are easy to locate and use for mobility-limited individuals.

Perfect for athletic gear and daily necessities as well as travel, school or hiking. A great bag for visually-impaired persons, sighted persons and anyone in general who appreciates amazing quality and innovative design.

Two levels of both-side-accessible compartments allow easy-access while wearing.  Inner compartment divider is removable if you prefer one large inner space.

OPTIONAL Accessories:  TEKNO and QUIK-E Pouches (Sold separately) attach to the MOLLE webbing and/or velcro, D-rings, etc. for additional storage space and quick access to smaller items.

            Performance Block is also available in Medium HD-23