This replacement horizontal flat stay fits our Arc Haul Ultra, Arc Zip Ultra, and discontinued Arc Blast, Arc Zip, Arc Haul, Arc Haul Zip, Arc Scout, Arc Haul Scout, Arc Air and Arc Air Zip Backpacks.

These replacement pre-curved vertical stays fit our Arc Haul Ultra, Arc Zip Ultra, and discontinued Arc Air and Arc Air Zip Backpacks.

These replacement pre-curved vertical stays fit our Arc Haul Ultra, Arc Zip Ultra, and discontinued Arc Air and Arc Air Zip Backpacks.

These replacement pre-curved vertical stays fit our Arc Haul Ultra, Arc Zip Ultra, and discontinued Arc Air and Arc Air Zip Backpacks.

These replacement round vertical stays fit our discontinued Arc Blast, Arc Zip, Arc Haul, and Arc Haul Zip Backpacks. If you prefer our original adjustable Arc stay system, these can be retrofitted into any of our new Arc Haul Ultra backpacks. You may need to trim down the length with a hacksaw to get the right fit.

These replacement round vertical stays fit our discontinued Arc Blast, Arc Zip, Arc Haul, and Arc Haul Zip Backpacks. If you prefer our original adjustable Arc stay system, these can be retrofitted into any of our new Arc Haul Ultra backpacks. You may need to trim down the length with a hacksaw to get the right fit.

These replacement round vertical stays fit our discontinued Arc Blast, Arc Zip, Arc Haul, and Arc Haul Zip Backpacks. If you prefer our original adjustable Arc stay system, these can be retrofitted into any of our new Arc Haul Ultra backpacks. You may need to trim down the length with a hacksaw to get the right fit.

This replacement Lycra Back Panel will fit on any of our "Arc" backpacks. It creates a trampoline with an air gap against the wearer's back.